Quantitative Apitude-Problems on Boat & Stream
Quantitative Apitude-Problems on Boat & Stream
41. A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 5 km in stationary water?
- 40 minutes
- 1 hour
- 1 hour 15 min
- 1 hour 30 min
42. There is a road beside a river.Two friends started from a place A, moved to a temple situated at another place B and then returned to A again. One of them moves on a cycle at a speed of 12 km/hr, while the other sails on a boat at a speed of 10 km/hr. If the river flows at the speed of 4 km/hr, which of the two friends will return to place A first ?
- 5.4 km /hr
- 7.2 km /hr
- 8.4 km/hr
- 9.6 km /hr
43. In one hour, a boat goes 11 km along the stream and 5 km against the stream. The speed of the boat in still water in ( km/hr) is
- 3
- 5
- 8
- 9
44. A man can row three - quarters of a kilometer against the stream in 11¼minutes. The speed(in km/hr) of the man in still water is
- 2
- 3
- 4
- 5
45. If a man rows at the rate of 5 kmph in still water and his rate against the current is 3.5 kmph, then the man’s rate along the current is
- 4.25 kmnph
- 6 kmph
- 6.5 kmph
- 8.5 kmph
46. Speed of a boat in standing water is 9 kmph and the speed of the stream is 1. 5 kmph. A man rows to a place at a distance of 105 km and comes back to the starting point. The total time taken by him is
- 16 hours
- 18 hours
- 20 hours
- 24 hours
47. The speed of a boat in still water is 15 km/hr and the rate of current is 3 km/hr. The distance travelled downstream in 12 minutes is
- 1.2 km
- 1.8 km
- 2.4 km
- 3.6 km
48. A boat takes 90 minutes less to travel 36 miles downstream than to travel the same distance upstream. If the speed of the boat in still water is 10 mph, the speed of the stream is
- 2 mph
- 2.5 mph
- 3 mph
- 4 mph