A man can row 8 kmh"1 in still water. If the river is running at 2 kmh1 , it takes 4 hrs more upstream than to go downstream for the same distance. Then the distance is given by
A). 40 km
B). 50 km
C). 60 km
D). 70 km
A boy goes to the market at a speed of 10 kmh"1 and returns at a speed of 5 kmh1 . If he takes 3 hours in all, what is the distance between his home and the market ?
A). 5 km
B). 10 km
C). 15 km
D). 20 km
A man covers a certain distance on a scooter. Had he moved 6 km/h faster, he would have taken 30 minutes less. If he had moved 2 kmh"1 slower he would havetaken 30 minutes more. What is the distance ?
A). 3 km
B). 5 km
C). 4 km
D). 6 km
A thief is spotted by policeman from distance of 100 m. When policeman starts the chase, thief starts running. If the speed of thief be 4 kmh1 & that of the policeman 10 kmh1 , how far thief from poli
A). 66.66 m
B). 77.66 m
C). 88.66 m
D). 99.66 m
A man can row three quarters of a kilometre against the stream in 11 1/4 minutes and down the stream in 7 1/2 minutes. The speed (in km/hr) of the man in still water is
A). 2 kmh-1
B). 3 kmh-1
C). 4 kmh-1
D). 5 kmh-1