A. 90 m
B. 100 m
C. 120 m
D. 140 m
River is running at 3 kmph. It takes a man twice as long to row up as to row down the river. The rate of the main in still water is:
A watch gains 12 seconds every 3 hours, what time will it show at 10 A.M. on Tuesday if the watch is set right at 3 A.M. on Sunday?
The speed of the boat in still water in 12 kmph. It can travel downstream through 45 kms in 3 hrs. In what time would it cover the same distance upstream?
In a 100m race A cover the distance in 36 seconds and B in 45 seconds. In this race A beats B by
The ratio between the speeds of two trains is 7 : 8. If the second train runs 400 kms in 4 hours then the speed of the first train is: