Quantitative Apitude-Problems on Boat & Stream
Quantitative Apitude-Problems on Boat & Stream
31. A man takes twice as long to row a distance against the stream as to row the same distance in favour of the stream. The ratio of the speed of the boat (in still water) and the stream is:
- 2 : 1
- 3 : 1
- 3 : 2
- 4 : 3
32. A man rows to a place 48 km distant and come back in 14 hours. He finds that he can row 4 km with the stream in the same time as 3 km against the stream. The rate of the stream is:
- 1 km/hr
- 1.5 km/hr
- 2 km/hr
- 2.5 km/hr
33. A boat can travel with a speed of 13 km / hr in still water. If the speed of the stream is 4 km / hr. find the time taken by the boat to go 68 km downstream?
- 2 hours
- 3 hours
- 4 hours
- 5 hours
34. 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
35. A boat takes 19 hours for travelling downstream from point A to point B and coming back to a point C midway between A and B. If the velocity of the stream is 4 kmph and the speed of the boat in still water is 14 kmph, what is the distance between A and B ?
- 160 km
- 180 km
- 200 km
- 220 km
36. A boat running downstream covers a distance of 16 km in 2 hours while for covering the same distance upstream, it takes 4 hours. What is the speed of the boat in still water ?
- 4 km/hr
- 6 km/hr
- 8 km/hr
- Data inadequate
37. A man can row upstream at 8 kmph and downstream at 13 kmph. The speed of the stream is
- 2.5 km/hr
- 4.2 km/hr
- 5 km/hr
- 10.5 km/hr
38. A boat covers a certain distance downstream in I hour, while it comes back in 1½ hours. If the speed of the stream be 3 kmph. what is the speed of the boat in still Water?
- 12kmph
- 13kmph
- 15kmph
- 16kmph
39. A man's speed with the current is 15 km/hr and the speed of the current is 2.5 km/hr The man's speed against the current is
- 8.5 km/hr
- 9 km/hr
- 10 km/hr
- 12.5 km/hr
40. A man can row upstream at 7 kmph and downstream at 10 kmph.Find man's rate in still water and the rate of current?
- 1.2 km/hr
- 1.5 km/hr
- 1.6 km/hr
- 1.8 km/hr