1. A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 252 seconds, B in 308 seconds and c in 198 seconds, all starting at the same point. After what time will they again at the starting point ? 1. 26 minutes and […]
1. How many seconds will a 500 meter long train moving with a speed of 63 km/hr, take to cross a man walking with a speed of 3 km/hr in the direction of the train ? 1. 42 2. 50 3. 30 4. 28 [expand title=”Answer & Explanation”] Answer:- 3 Explanation :- Relative Speed =
1. A train , 800 meter long is running with a speed of 78 km/hr. It crosses a tunnel in 1 minute. What is the length of the tunnel (in meters)? 1. 440 m 2. 500 m 3. 260 m 4. 430 m [expand title=”Answer & Explanation”] Answer:- 2 Explanation :- Let length of tunnel
1. Two stations P and Q are 110 km apart on a straight track. One train starts from P at 7 a.m. and travels towards Q at 20 kmph. Another train starts from Q at 8 a.m. and travels towards P at a speed of 25 kmph. At what time will they meet? 1. 10.30
1. A train runs at the speed of 72 kmph and crosses a 250 m long platform in 26 seconds. What is the length of the train? 1. 270 m 2. 210 m 3. 340 m 4. 130 m [expand title=”Answer & Explanation”] Answer:- 1 Explanation :- Let the length of the train be x
1. A train passes a platform in 36 seconds. The same train passes a man standing on the platform in 20 seconds. If the speed of the train is 54 km/hr, The length of the platform is 1. None of these 2. 280 meter 3. 240 meter 4. 200 meter [expand title=”Answer & Explanation”] Answer:-
1. Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively . If they cross each other in 23 seconds, what is the ratio of their speeds? 1. Insufficient data 2. 3 : 1 3. 1 : 3 4. 3 : 2 [expand title=”Answer &
1. A train is running at a speed of 40 km/hr and it crosses a post in 18 seconds. What is the length of the train? 1. 190 metres 2. 160 metres 3. 200 metres 4. 120 meters [expand title=”Answer & Explanation”] Answer:- 3 Explanation :- Speed = 40*(5/18) m/sec = 100/9 m/sec Length of
1.A is thrice as good a workman as B and takes 10 days less to do a piece of work than B takes. B alone can do the whole work in ? 1. 15 days 2. 10 days 3. 9 days 4. 8 days 5. None of these [expand title=”Answer & Explanation”] Answer:- 1 Explanation
1. To Finish a work, B will take three times as long as A and C together and C will take twice as long as A and B together. If the three persons A, B and C together can finish the work in 20 days , then how long will A take to finish the
1. Ram starts working on a job and works on it for 12 days and completes 40% of the work. To help him complete the work, he employs Ravi and together they work for another 12 days and the work gets completed. How much more efficient is Ram than Ravi? 1. 50% 2. 200% 3.
1. There is a group of persons each of whom can complete a piece of work in 16 days, when they are working individually. On the first day one person works, on the second day another person joins him, on the third day one more person joins them and this process continues till the work
1. P and Q need 8 days to complete a work. Q and R need 12 days to complete the same work. But P, Q and R together can finish it in 6 days. How many days will be needed if P and R together do it? 1. 3 2. 8 3. 12 4. 4
1. P takes twice as much time as Q or thrice as much time as R to finish a piece of work. They can finish the work in 2 days if work together. How much time will Q take to do the work alone? 1. 4 2. 5 3. 6 4. 7 [expand title=”Answer &
1. P, Q and R can complete a work in 24, 6 and 12 days respectively. The work will be completed in — days if all of them are working together. 1. 2 2. 3 3⁄7 3. 4 ¼ 4. 5 [expand title=”Answer & Explanation”] Answer:- 2 Explanation :- P’s 1 day work = 1/24,