Boat and Stream (Part-2)

Total Questions: 27

11. Ankit went to Manali, for river rafting. He rows at the rate of 12 km/h in still water. To cover the same distance, it takes him twice as long to row up as to row down the river. Find the rate of flow of the river. [SSC CHSL 15/03/2023 (3rd Shift)]

Correct Answer: (b) 4 km/h
Solution:

12. A man can row 10 km/h in still water. When the river is running at a speed of 4.5 km/h, then it takes him 2 h to row to a place and comes back to the initial point. How far is the place (in km) (rounded off to two decimal places)? [SSC CGL Tier II (02/03/2023)]

Correct Answer: (c) 7.98
Solution:

13. A swimmer swims from a point P against the current for 6 min and then swims back along the current for next 6 min and reaches at a point Q. If the distance between P and Q is 120 m then the speed of the current (in km/h) is: [SSC CGL 01/12/2022 (3rd Shift)]

Correct Answer: (d) 0.6
Solution:

14. A boat racer can row 21³⁄₂ still water. If the speed of river is 12.5 km/h, it takes him 40 minutes to row to a place and back, how far off is the place ? [SSC CGL 06/12/2022 (1st Shift)]

Correct Answer: (a) 5⁵⁄₂₇ km
Solution:

15. A man rows to a place 48 km distant and comes 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 speed of the stream is: [SSC CGL 07/12/2022 (2nd Shift)]

Correct Answer: (d) 1 km/h
Solution:

16. A boat can go 40 km downstream and 25 km upstream in 7 hours 30 minutes. It can go 48 km downstream and 36 km upstream in 10 hours. What is the speed (in km/h) of the boat in still water? [SSC CPO 09/11/2022 (Evening)]

Correct Answer: (c) 9
Solution:

17. The speed of a boat in still water is thrice the speed of the stream. If the boat takes 15.5 sec to go to a certain place downstream, then find the additional time required to cover the same distance traveling upstream. [SSC CPO 11/11/2022 (Afternoon)]

Correct Answer: (a) 15.5 sec
Solution:

18. A person can row downstream 49 km in 7 hours and upstream 36 km in 9 hours. What is the speed of the current? [Higher Secondary 02/08/2022 (Shift-2)]

Correct Answer: (a) 1.5 km/h
Solution:

19. The speed of a boat in still water is 16 km/h. The time taken by the boat to cover a distance of 18 km upstream is equal to the time taken by the boat to travel 30 km downstream. What is the speed of the stream?(in km/h) [SSC MTS 06/07/2022 (Evening)]

Correct Answer: (a) 4
Solution:

20. A man rows from J and K (upstream) and back from K and J (downstream) in a total time of 15 hours. The distance between J and K is 300 km. The time taken by the man to row 9 km downstream is identical to the time taken by him to row 3 km upstream. What is the approximate speed of the boat in still water?(in km/h) [SSC MTS 12/07/2022 (Evening)]

Correct Answer: (c) 53.33
Solution: