1.
Two trains having lengths of 210 m and 140 m are running at speeds of 80 km/h and 150 km/h, respectively, in the same direction. The time taken (in minutes) by the faster train, coming from behind, to completely cross the other train is:
2.
A man goes to Ahmedabad from Kolkata at a speed of 9km/hr and returns to Kolkata at speed of 18km/hr, through same route. What is his average speed (in km/hr) of the entire journey?
3.
Two trains, each 180 m long, are moving towards each other on parallel tracks at speeds of 50 km/hr and 70 km/hr. In how many seconds will they completely cross each other?
4.
Rachin travels a distance at 60 km/hr for 2 hours and 80 km at 40 km/hr. Find the average speed of Rachin (in km/hr).
5.
Two trains are moving in opposite directions at speeds of 60 km/h and 110 km/h. The length of one train is 360 m. The time taken by them to cross each other is 21 seconds. The length (in m) of the other train, correct to 2 decimal places, is:
6.
A gun is fired at a distance of 1.35 km from Mukul. She hears the sound after three seconds. The speed (in m/s) at which sound travels is:
7.
The speed of a stream is 9 km/h. A boat can go 56 km downstream and 28 km upstream in 7 hours. What is the speed (in km/h) of the boat in still water?
8.
Manoj travels from City A to City B. If Manoj drives his car at \(\frac{1}{5}\) of his normal speed. then he reaches City B 36 minutes late. Find the time (in minutes) that Manoj would have taken to travel from City A to City B if he drove at his normal speed.
9.
A man goes to Ahmedabad from Kolkata at a speed of 78km/hr and returns to Kolkata at speed of 91km/hr, through same route. What is his average speed (in km/hr) of the entire journey?
10.
A and B are two stations 370 km apart. A train starts from station A at 9:00 A.M. and travels towards station B at a speed of 20km/hr. Another train starts from station B at 10:00 A.M. and travels towards station A at a speed of 50 km per/hr. At what time do they meet?
11.
Two trains having lengths of 170 m and 480 m are running at speeds of 70 km/h and 80 km/h, respectively, in the same direction. The time taken (in minutes) by the faster train, coming from behind, to completely cross the other train is:
12.
A car covers four successive 8 km distances at speeds of 12 km/hr, 18 km/hr, 24 km/hr and 36 km/hr, respectively. Its average speed (in km/hr) over this distance is:
13.
Chetan travels from City A to City B. If Chetan drives his car at \(\frac{3}{4}\) of his normal speed, then he reaches City B 33 minutes late. Find the time(in minutes) that chetan would have taken to travel from City A to City B if he drove at his normal speed.
14.
A thief saw a policeman, and he started running at a speed of 18 m/s. After 12 seconds, the policeman starts running behind the thief at a certain speed. If the policeman covered 864 meters distance to reach the thief, then the speed (in m/s) of the policeman is :
15.
Two trains, 148 m and 152 m long, are running towards each other on parallel lines at 62 km/h and 46km/h, respectively. In what time will they be clear of each other from the moment they meet?
16.
A policeman chases a thief. The speed of the policeman and thief are 10 kmph and 8 kmph, respectively. If the policeman started 15 minutes late, find the time taken by the policeman to catch the thief.
17.
A policeman follows a thief, who is 150 metres ahead of him., and they run at the speed of 6 km/h and 5 km/h, respectively. What distance does the policeman cover to catch up with the thief?
18.
The speed of a boat is still water is 13 km/h and the speed of the stream is 4 km/h. How much more time will it take in going upstream than Ingoing downstream a distance of 68 km? (Correct to the nearest minute)
19.
In a circular race of 1500 m, P and Q start from the same point and at the same time, at speeds of 20km/h and 35 km/h, respectively. After what time will they meet for the first time on the track if they are running in the same direction?
20.
Ravi goes to college from his village at the speed of 5km/h and returns at the speed of 4km/h. If he takes 9 hours in all, find the distance (in km) between the village and the college.
21.
Two trains running towards each other on parallel tracks, at speeds of 45 km/hr and 51 km/hr, take 21 seconds to cross each other. If the length of one train is 290 m, then the length (in m) of the other train is:
22.
A 725 m long train passes through a 235 m long tunnel in 48 sec. Find the speed of the train.
23.
A train travelling at a speed of 60 km/h leaves station A at 7 : 00 a.m. and another train travelling at a speed of 84 km/h starts from station A at 9:30 a.m. in the same direction on a parallel track. At what distance (in km) from station A and after how many hours of travel of the second train will they be together? Express your answer in the same order.
