# Placement Written test paper for MNC || Math questions and answers Part –5

 Ques 201 : Choose the correct answer. A sells a bicycle to B at a profit of 20%. B sells it to C at a profit of 25%. If C pays Rs. 225 for it, the cost price of the bicycle for A is: Option 1 : Rs. 110 Option 2 : Rs.120 Option 3 : Rs. 125 Option 4 : Rs. 150 Ques 202 : Choose the correct answer. If 5% more is gained by selling an article for Rs. 350 than by selling it for Rs. 340, the cost of the article is: Option 1 : Rs. 50 Option 2 : Rs. 160 Option 3 : Rs. 200 Option 4 : Rs. 225 Ques 203 : Choose the correct answer. Consider the following statements : If a sum of money is lent at simple interest, then the 1. Money gets doubled in 5 years if the rate of interest is 50/3 %. 2. Money gets doubled in 5 years if the rate of interest is 20%. 3. Money becomes Option 1 : 1 and 3 are correct Option 2 : 2 alone is correct Option 3 : 3 alone is correct Option 4 : 2 and 3 are correct Ques 204 : Choose the correct answer. The difference between simple interest and compound interest on Rs.1200 for one year at 10% per annum reckoned half-yearly is: Option 1 : Rs. 2.50 Option 2 : Rs. 3 Option 3 : Rs. 3.75 Option 4 : Rs. 4 Option 5 : None of these Ques 205 : Choose the correct answer. A sum of money lent at compound interest for 2 years at 20% per annum would fetch Rs. 482 more, if the interest was payable half-yearly than if it was payable annually. The sum is: Option 1 : Rs. 10,000 Option 2 : Rs. 20,000 Option 3 : Rs. 40,000 Option 4 : Rs. 50,000 Ques 206 : Choose the correct answer. The simple interest on Rs. 10 for 4 months at the rate of 3 paise per rupee per month is: Option 1 : Rs. 1.20 Option 2 : Rs. 1.60 Option 3 : Rs. 2.40 Option 4 : Rs. 3.60 Ques 207 : Choose the correct answer. If the compound interest on a sum for 2 years at 25/2 % per annum is Rs. 510, the simple interest on the same sum at the same rate for the same period of time is: Option 1 : Rs. 400 Option 2 : Rs. 450 Option 3 : Rs. 460 Option 4 : Rs. 480 Ques 208 : Choose the correct answer. I started on my bicycle at 7 a.m. to reach a certain place. After going a certain distance, my bicycle went out of order. Consequently, I rested for 35 minutes and came back to my house walking all the way. I reached my house at 1 p.m. If my cycling s Option 1 : 4.92 km Option 2 : 13.44 km Option 3 : 14.375 km Option 4 : 15.476 km Ques 209 : Choose the correct answer. A bag contains 10-paisa, 20-paisa and 25-paisa coins in the ratio 7:4:3. If the total value is Rs. 90, the number of 25-paisa coins in the bag is: Option 1 : 120 Option 2 : 160 Option 3 : 280 Option 4 : 300 Ques 210 : Choose the correct answer. Find a whole number such that when one of its digit is erased, the resulting number is equal to one-ninth of the original number. The resulting number is also a multiple of 9. Option 1 : 90 Option 2 : 83438 Option 3 : 10125 Option 4 : 70847 Ques 211 : Choose the correct answer. A ship is moving at a speed of 30 kmph. To know the depth of the ocean beneath it, it sends a radiowave which travels at a speed 200 m/s. The ship receives back the signal after it has moved 500 m. What is the depth of the ocean? Option 1 : 4 km Option 2 : 8 km Option 3 : 6 km Option 4 : 12 km Ques 212 : Choose the correct answer. In a town the population grows at a simple rate of 10% in a decade and compounds from decade to decade. Find the population at the beginning of the 1970s if the population at the beginning of the 1990s is 3,63,000 people. Option 1 : 30,000 Option 2 : 3,00,000 Option 3 : 30,00,000 Option 4 : 3,15,000 Ques 213 : Choose the correct answer. In approximately how many years will a certain sum of money triple itself at 22% simple interest? Option 1 : 10 years Option 2 : 11 years Option 3 : 9 years Option 4 : 12 years Ques 214 : Choose the correct answer. A man rows a boat at a speed of 5 km/hr in still water. Find the speed of a river if it takes him 1 hr to row a boat to a place 2.4 km away and return back. Option 1 : 1 km/hr Option 2 : 6 km/hr Option 3 : 3 km/hr Option 4 : 4 km/hr Ques 215 : Choose the correct answer. A boat covers 40 km upstream and 90 km downstream in 5 hr. It can also cover 60 km upstream and 60 km downstream in 5 hr. The speed of the water current is Option 1 : 4 km/hr Option 2 : 5 km/hr Option 3 : 20 km/hr Option 4 : 25 km/hr Ques 216 : Choose the correct answer. Two champion swimmers start a two-length swimming race at the same time, but from opposite ends of the pool. They swim at constant but different speeds. They first pass at a point 18.5 m from the deep end. Having completed one length, each swimmer take Option 1 : 90 m Option 2 : 45 m Option 3 : 26.5m Option 4 : Data insufficient Ques 217 : Choose the correct answer. A and B start together from the same point on a circular track and walk in the same direction till they both again arrive together at the starting point. A completes one circle in 224 s and B in 364 s. How many times will A have passed B? Option 1 : 4 Option 2 : 5 Option 3 : 6 Option 4 : 7 Ques 218 : Choose the correct answer. 36 men can complete a piece of work in 18 days. In how many days will 27 men complete the same work ? Option 1 : 12 Option 2 : 18 Option 3 : 22 Option 4 : 24 Option 5 : None of these Ques 219 : Choose the correct answer. 39 persons can repair a road in 12 days, working 5 hours a day. In how many days will 30 persons, working 6 hours a day, complete the work ? Option 1 : 10 Option 2 : 13 Option 3 : 14 Option 4 : 15 Ques 220 : Choose the correct answer. If 7 spiders make 7 webs in 7 days, then 1 spider will make 1 web in how many days ? Option 1 : 1 Option 2 : 7/2 Option 3 : 7 Option 4 : 49 Ques 221 : Choose the correct answer. Some persons can do a piece of work in 12 days. Two times the number of such persons will do half of that work in: Option 1 : 6 days Option 2 : 4 days Option 3 : 3 days Option 4 : 12 days Ques 222 : Choose the correct answer. Ronald and Elan are working on an assignment. Ronald takes 6 hours to type 32 pages on a computer, while Elan takes 5 hours to type 40 pages. How much time will they take, working together on two different computers to type an assignment of 110 pages ? Option 1 : 7 hours 30 minutes Option 2 : 8 hours Option 3 : 8 hours 15 minutes Option 4 : 8 hours 25 minutes Ques 223 : Choose the correct answer. A and B can do a work in 12 days, B and C in 15 days, C and A in 20 days. If A, B and C work together, they will complete the work in: Option 1 : 5 days Option 2 : 47/6 days Option 3 : 10 days Option 4 : 47/3 days Ques 224 : Choose the correct answer. A and B can do a job together in 7 days. A is 7/4 times as efficient as B. The same job can be done by A alone in: Option 1 : 28/3 days Option 2 : 11 days Option 3 : 49/4 days Option 4 : 49/3 days Ques 225 : Choose the correct answer. A and B can complete a work in 15 days and 10 days respectively. They started doing the work together but after 2 days B had to leave and A alone completed the remaining work. The whole work was completed in: Option 1 : 8 days Option 2 : 10 days Option 3 : 12 days Option 4 : 15 days Ques 226 : Choose the correct answer. A, B and C together can complete a piece of work in 10 days. All the three started working at it together and after 4 days A left. Then B and C together completed the work in 10 more days. A alone could complete the work in: Option 1 : 15 days Option 2 : 16 days Option 3 : 25 days Option 4 : 50 days Ques 227 : Choose the correct answer. One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in: Option 1 : 81 min Option 2 : 108 min Option 3 : 144 min Option 4 : 192 min Ques 228 : Choose the correct answer. A large tanker can be filled by two pipes A and B in 60 minutes and 40 minutes respectively. How many minutes will it take to fill the tanker from empty state if B is used for half the time and A and B fill it together for the other half ? Option 1 : 15 min Option 2 : 20 min Option 3 : 27.5 min Option 4 : 30 min Ques 229 : Choose the correct answer. Three taps A, B and C can fill a tank in 12, 15 and 20 hours respectively. If A is open all the time and B and C are open for one hour each alternately, the tank will be full in: Option 1 : 6 hrs. Option 2 : 20/3 hrs Option 3 : 7 hrs Option 4 : 15/2 hrs Ques 230 : Choose the correct answer. Two pipes can fill a tank in 20 and 24 minutes respectively and a waste pipe can empty 3 gallons per minute. All the three pipes working together can fill the tank in 15 minutes. The capacity of the tank is: Option 1 : 60 gallons Option 2 : 100 gallons Option 3 : 120 gallons Option 4 : 180 gallons Ques 231 : Choose the correct answer. Ram and Shyam together do a work in 8 days. Both of them began to work. After 3 days Ram fell ill. Shyam completed the remaining work in 15 days. In how many days can Ram complete the whole work? Option 1 : 12 Option 2 : 17 Option 3 : 16 Option 4 : 15 Ques 232 : Choose the correct answer. Two workers A and B were employed for a work. A takes 8 hour more than the time taken by A and B together. If B takes 4.5 hours more than the time taken by A and B together, how long would A and B take together to complete the work? Option 1 : 7 hours Option 2 : 6 hours Option 3 : 5 hours Option 4 : 4 hours Ques 233 : Choose the correct answer. If 5 persons can do 5 times of a work in 5 days, then 10 persons can do 10 times of that work in: Option 1 : 10 days Option 2 : 8 days Option 3 : 5 days Option 4 : 2 days Ques 234 : Choose the correct answer. Two taps can fill a cistern in 6 min. and 7 min. respectively. If these taps are opened alternatively for a minute, in what time will the cistern be filled? Option 1 : 5.67 min Option 2 : 6.25 min Option 3 : 5 min Option 4 : 45/7 min Ques 235 : Choose the correct answer. Two taps A and B can fill a cistern in 28 min. and 42 min. respectively. Third tap C can empty it in 42 min. If all the three taps are opened, the time taken to fill the cistern is: Option 1 : 30 min Option 2 : 35 min Option 3 : 28 min Option 4 : 42 min Ques 236 : Choose the correct answer. 49 pumps can empty a reservoir in 6½ days, working 8 hours a day. If 196 pumps are used for 5 hours a day, then the same work will be completed in: Option 1 : 2.6 days Option 2 : 3 days Option 3 : 2.5 days Option 4 : 2 days Ques 237 : Choose the correct answer. 16 men complete one-fourth of a piece of work in 12 days. What is the additional number of men required to complete the work in 12 more days ? Option 1 : 48 Option 2 : 36 Option 3 : 30 Option 4 : 16 Ques 238 : Choose the correct answer. A takes thrice as long to do a piece of work, as B takes. A and B together can do a piece of work in 7.5 days. A alone can do in: Option 1 : 30 days Option 2 : 40 days Option 3 : 50 days Option 4 : 60 days Option 5 : None of these Ques 239 : Choose the correct answer. A cistern can be filled by two pipes A and B in 10 and 15 hours respectively and is then emptied by a tap in 8 hours. If all the taps are opened, the cistern will be fill in: Option 1 : 21 hours Option 2 : 22 hours Option 3 : 23 hours Option 4 : 24 hours Option 5 : None of these Ques 240 : Choose the correct answer. A locomotive engine, without any wagons attached to it, can go at a speed of 40 km/hr. Its speed is diminished by a quantity that varies proportionally as the square root of the number of wagons attached. With 16 wagons, its speed is 28 km/hr. The Option 1 : 99 Option 2 : 100 Option 3 : 101 Option 4 : 120 Ques 241 : Choose the correct answer. If 33 untrained labourers can do a work in 15 days of 12 hr. each, how many trained labourers can do 50% more work in 11 days of 9 hr each ? (It may be assumed that it takes 2 trained labourers to do the work of 5 untrained labourers) Option 1 : 42 Option 2 : 36 Option 3 : 90 Option 4 : 100 Ques 242 : Choose the correct answer. Which of the following fractions is less than 7/8 and greater than 1/3 ? Option 1 : 1/4 Option 2 : 23/24 Option 3 : 11/12 Option 4 : 11/24 Ques 243 : Choose the correct answer. 892.7 – 573.07 – 95.007 = ? Option 1 : 224.623 Option 2 : 224.777 Option 3 : 233.523 Option 4 : 414.637 Ques 244 : Choose the correct answer. Which is the closest approximation to the product 0.3333 x 0.25 x 0.499 x 0.125 x 24 ? Option 1 : 1/8 Option 2 : 3/4 Option 3 : 3/8 Option 4 : 2/5 Ques 245 : Choose the correct answer. Find the value of X : 0.009/X = 0.01 Option 1 : 0.0009 Option 2 : 0.09 Option 3 : 0.9 Option 4 : 9 Ques 246 : Choose the correct answer. The least among the following is: Option 1 : 0.2 Option 2 : 1/0.2 Option 3 : 0.22222222 Option 4 : (0.2)2 Ques 247 : Choose the correct answer. In the following expression, there are two missing digits: * and #. Find the value of *. 1*5#4 / 148 = 78 Option 1 : 1 Option 2 : 4 Option 3 : 6 Option 4 : 8 Option 5 : None of these Ques 248 : Choose the correct answer. What is the value of (-5)(4)(2)(-1/2)(3/4) ? Option 1 : -30 Option 2 : -15 Option 3 : 15 Option 4 : 30 Ques 249 : Choose the correct answer. If x * y = x2 + y2 – xy, then the value of 9 * 11 is: Option 1 : 93 Option 2 : 103 Option 3 : 113 Option 4 : 121 Ques 250 : Choose the correct answer. If a = 0.1039, then the value of (4a2 – 4a + 1)1/2 + 3a is: Option 1 : 0.1039 Option 2 : 0.2078 Option 3 : 1.1039 Option 4 : 2.1039