Boats And Streams - Aptitude 1 MCQ Questions and answers

11 . The speed of a boat downstream is 15 km/hr and the speed of current is 3 km/hr. Find the total time taken by the boat to cover 15 km upstream and 15 km downstream.

2 hour 43 min
2 hour 40 min
3 hour 56 min
3 hour 60 min

Answer - [ 2 hour 40 min ]

12 .The speed of a boat in still water is 10 km/hr. If it can travel 26 km downstream and 14 km upstream at the same time, the speed of the stream is?

5 km/hr
3 km/hr
6.7 km/hr
8 km/hr

Answer - [ 3 km/hr ]

13. A man row to a place 48 km distant and back on 14 hours text. 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?

5 km/hr
1 km/hr
6.3 km/hr
7.5 km/hr

Answer - [ 1 km/hr ]

14 . If the speed of a boat in still water is 20km/hr and the speed of the current is 5km, then the time taken by the boat to travel 100 km with the current is?

3 hours
4 hours
8 hours
10 hours

Answer - [ 4 hours ]

15 . A man takes 2.2 times as long to row a distance upstream as to row the same distance downstream. If he can row 55 km downstream in 2 hour 30 minutes, what is the speed of the boat in the still water?

43 km/hr
16 km/hr
4 km/hr
8 km/hr

Answer - [ 16 km/hr ]

16 . A boat can tarvel 36 km upstream in 5 hours. If the speed of the stream is 2.4 kmph, how much time will the boat take to cover a distance of 78 km downstream?(in hours)

5.7 hr
6.8 hr
6.5 hr
2.6 hr

Answer - [ 6.5 hr ]

17 . The speed of the boat in still water is 5 times that of current, it takes 1.1 hour to row to point B from point A downstream. The distance between point A and point B is 13.2 km. How much distance (in km) will it cover in 312 minutes upstrem?

41.8 km
41 km
41.6 km
50 km

Answer - [ 41.6 km ]

18 . A man can row upstream at 12km/hr and downstream at 18 km/hr. The man rowing speed in still water is?

5 km/hr
15 km/hr
30 km/hr
10 km/hr

Answer - [ 15 km/hr ]

19 . On a river , Q is the mid - point between two points P and R on the same bank of the river. A boat can go from P to Q and back in 12 hours, and from P to R in 16 hours 40 minutes. How long would it take to go from R to P?

7(1/3) hr
7(6/7) hr
4 hr
6(5/6) hr

Answer - [ 7(1/3) hr ]

20 . A boat while dowenstream in a reiver converd a distance of 50 miles at an average speed of 60 miles per hour. While returning , because of the water resistance , it took 1 hour 15 minutes to cover the same distance What was the average speed during the whole journey?