A boy walks 15 m in 7 seconds and then walks back in 5 seconds. His average speed (in m/s) is∶

A boy walks 15 m in 7 seconds and then walks back in 5 seconds. His av

1.	A boy walks 15 m in 7 seconds and then walks back in 5 seconds. His average speed (in m/s) is∶
A.	6
B.	2.5
C.	3.25
D.	4
Answer» C. 3.25

Discussion

No Comment Found

Related MCQs

Places A and B are 396 km apart. Train X leaves from A for B and train Y leaves from B for A at the same time on the same day on parallel tracks. Both trains meet after \(5\frac{1}{2}\) hours. The speed of Y is 10 km/h more than that of X. What is the speed (in km/h) of Y?
A train of length 150 meters passes a pole in 15 seconds and crosses another train of the same length travelling in opposite direction in 12 seconds. The speed of the second train would be :
A swimmer can swim at a speed of 0.5 m/s in still water. How much distance will he cover in 25 minutes?
A train travels at a speed of 72 km/h. How may metres will it travel in 12 min?
A man swims downstream 12 kmph and upstream 4 kmph; his speed in still water is:
A boat takes half time in rowing a certain distance downstream than upstream. What is the ratio of the speed of boat in still water to the speed of current?
A train of length 212 m is running at 45 km/h. In what time (in seconds) will it cross a platform of length 188 m?
A man in a train notices that he can count 21 telephone posts in one minute. If they are known to be 50 meters apart, then at what speed is the train running?
A train X travelling at 60 km/h overtakes another train Y, 225 m long, and completely passes it in 72 seconds. If the trains had been going in opposite directions, they would have passed each other in 18 seconds. The length (in m) of X and the speed (in km/h) of Y are, respectively:
Raja and Gopal are at a distance of 48 km. They start at the same time to meet each other traveling at a rate of 7 km/hr and 5 km/hr respectively. They meet after the time _________.

A boy walks 15 m in 7 seconds and then walks back in 5 seconds. His average speed (in m/s) is∶

Discussion

No Comment Found

Related MCQs

Reply to Comment