71). Two trains are moving in opposite directions with speeds of 6 m/s and 12 m/s, respectively. Find their relative speed.
| A). 18 m/s |
| B). 15 m/s |
| C). 20 m/s |
| D). 6 m/s |
|
72). Two trains are moving in the same direction with speeds of 15 km/ and 21 km/h, respectively. What is the speed of trains in respect of each other?
| A). 26 km/h |
| B). 15 km/h |
| C). 6 km/h |
| D). 24 km/h |
|
73). Two trains of lengths 70 m and 90 m are moving in opposite directions at 10 m/s and 6 m/s, respectively. Find the time taken by trains to cross each other.
| A). 10 s |
| B). 8 s |
| C). 12 s |
| D). 16 s |
|
74). Two trains of length 512 m and 528 m are running towards each other on parallel lines at 84 km/h and 60 km/h, respectively. In what time, will they be clear of each other from the moment they meet?
| A). 26 s |
| B). 25 s |
| C). 15 s |
| D). 27 s |
|
75). Two trains of lengths 50 m and 65 m are moving in the same direction at 18 m/s and 17 m/s, respectively. Find the time taken by the faster train to cross the slower train.
| A). 100 s |
| B). 114 s |
| C). 95 s |
| D). 115 s |
|
76). Two trains start at the same time from points x and y towards each other and after crossing, they take 9 h and 4 h in reaching points y and x, respectively. Find the ratio of speeds of the 1st train to that of the 2nd train.
| A). 2 : 3 |
| B). 3 : 2 |
| C). 2 : 5 |
| D). 5 : 3 |
|
77). From stations M and N, two trains start moving towards each other at speed 125 km/h and 75 km/h, respectively. When the two trains meet each other, it is found that one train covers 50 km more than another. Find the distance between M and N.
| A). 190 km |
| B). 200 km |
| C). 145 km |
| D). 225 km |
|
78). Two trains A and B start from Delhi and Patna towards Patna and Delhi, respectively. After passing each other, they take 16 h and 9 h to reach Patna and Delhi, respectively. If the train from Delhi is moving at 90 km/h, then find the speed of the other train (in km/h).
| A). 120 |
| B). 190 |
| C). 125 |
| D). 145 |
|
79). Two trains running in opposite directions cross a man standing on the platform in 54s and 34s respectively and they cross each other in 46 s. Find the ratio of their speeds.
| A). 3 : 2 |
| B). 2 : 3 |
| C). 5 : 3 |
| D). 3 : 5 |
|
80). Two trains of same length take 6 s and 9 s, respectively to cross a pole. If both the trains are running in the same direction, then how long will they take to cross each other?
| A). 30 s |
| B). 36 s |
| C). 40 s |
| D). 42 s |
|
