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Q1. A boat travels 54 km upstream in 9 hours and 60 km downstream in 5 hours. Find the ratio of the speed of the boat in still water to the speed of the stream.

(A) 3:1
(B) 2:1
(C) 4:1
(D) 5:2

Q2. A boat covers 80 km upstream in 10 hours and 90 km downstream in 6 hours. Find the speed of the stream.

(A) 3.5 km/h
(B) 3 km/h
(C) 4 km/h
(D) 2.5 km/h

Q3. A boat covers 120 km downstream in 8 hours and returns the same distance upstream in 12 hours. What is the speed of the stream?

(A) 2.5 km/h
(B) 3 km/h
(C) 2 km/h
(D) 1.5 km/h

Q4. Downstream speed of a boat is 18 km/h and upstream speed is 10 km/h. Find the ratio of boat speed in still water to stream speed.

(A) 7:2
(B) 7:4
(C) 5:2
(D) 9:2

Q5. A boat covers 45 km downstream in 3 hours and 45 km upstream in 5 hours. Find the speed of the stream.

(A) 3 km/h
(B) 4 km/h
(C) 2 km/h
(D) 5 km/h

Q6. A boat covers 100 km downstream in 4 hours and 100 km upstream in 10 hours. Find the speed of the boat in still water.

(A) 17.5 km/h
(B) 15 km/h
(C) 20 km/h
(D) 12.5 km/h

Q7. Downstream speed is 24 km/h and upstream speed is 16 km/h. Find speed of stream and speed of boat in still water respectively.

(A) 4 km/h and 20 km/h
(B) 8 km/h and 20 km/h
(C) 4 km/h and 16 km/h
(D) 2 km/h and 22 km/h

Q8. The downstream and upstream speeds of a boat are 30 km/h and 18 km/h respectively. Find the speed of the stream.

(A) 6 km/h
(B) 12 km/h
(C) 8 km/h
(D) 4 km/h

Q9. A boat covers 60 km downstream in 3 hours and 60 km upstream in 5 hours. Find the ratio of boat speed in still water to stream speed.

(A) 4:1
(B) 3:1
(C) 5:2
(D) 2:1

Q10. A boat covers 36 km upstream in 4 hours and 56 km downstream in 4 hours. Find the ratio of speed of boat in still water to stream speed.

(A) 23:5
(B) 4:1
(C) 5:1
(D) 3:1

Q11. The sum of downstream and upstream speeds of a boat is 40 km/h. The ratio of downstream to upstream speed is 3:2. Find the speed of the stream.

(A) 4 km/h
(B) 5 km/h
(C) 3 km/h
(D) 6 km/h

Q12. The sum of downstream and upstream speeds of a boat is 36 km/h. The ratio of downstream to upstream speed is 5:4. Find the speed of the boat in still water.

(A) 18 km/h
(B) 19 km/h
(C) 20 km/h
(D) 17 km/h

Q13. The downstream and upstream speeds of a boat are in the ratio 7:5. If the sum of these speeds is 48 km/h, find the speed of the stream.

(A) 4 km/h
(B) 6 km/h
(C) 5 km/h
(D) 3 km/h

Q14. The difference between the downstream and upstream speeds of a boat is 8 km/h. The ratio of downstream to upstream speed is 3:1. Find the downstream speed.

(A) 12 km/h
(B) 16 km/h
(C) 10 km/h
(D) 14 km/h

Q15. Sum of downstream and upstream speeds is 50 km/h. Downstream speed to upstream speed ratio is 3:2. Find the speed of the boat in still water.

(A) 25 km/h
(B) 20 km/h
(C) 30 km/h
(D) 15 km/h

Q16. The sum of downstream and upstream speeds is 44 km/h. If the ratio of downstream speed to upstream speed is 6:5, find the stream speed.

(A) 2 km/h
(B) 4 km/h
(C) 3 km/h
(D) 1 km/h

Q17. Downstream to upstream speed ratio is 4:3 and their difference is 6 km/h. Find the speed of the boat in still water.

(A) 21 km/h
(B) 24 km/h
(C) 18 km/h
(D) 15 km/h

Q18. Downstream to upstream speed ratio is 5:3 and their sum is 40 km/h. Find the still water speed of the boat.

(A) 20 km/h
(B) 15 km/h
(C) 25 km/h
(D) 18 km/h

Q19. The ratio of speed of a boat in still water to speed of stream is 4:3. The boat covers 112 km downstream in 4 hours. How many hours will it take to cover 26 km upstream?

(A) 6.5 hours
(B) 5 hours
(C) 7 hours
(D) 4.5 hours

Q20. The ratio of speed of boat in still water to speed of stream is 5:2. The boat covers 140 km downstream in 4 hours. Find the upstream speed of the boat.

(A) 15 km/h
(B) 20 km/h
(C) 10 km/h
(D) 12 km/h

Q21. Ratio of boat speed to stream speed is 6:1. The boat covers 84 km downstream in 2 hours. How long does it take to travel 30 km upstream?

(A) 3 hours
(B) 4 hours
(C) 3.6 hours
(D) 5 hours

Q22. Ratio of boat speed to stream speed is 3:1. The boat covers 96 km downstream in 3 hours. How long does it take to travel 56 km upstream?

(A) 3.5 hours
(B) 4 hours
(C) 5 hours
(D) 3 hours

Q23. The ratio of speed of a boat to speed of stream is 8:3. The boat covers 176 km downstream in 4 hours. Find the still water speed of the boat.

(A) 32 km/h
(B) 40 km/h
(C) 24 km/h
(D) 36 km/h

Q24. Ratio of boat speed in still water to stream speed is 7:2. Boat covers 108 km downstream in 4 hours. Find the time to cover 90 km upstream.

(A) 6 hours
(B) 8 hours
(C) 9 hours
(D) 10 hours

Q25. Ratio of speed of a boat in still water to speed of stream is 6:5. The boat covers 165 km downstream in 5 hours. If the boat speed in still water is then increased by 2 km/h, find the time to cover 60 km upstream.

(A) 12 hours
(B) 10 hours
(C) 8 hours
(D) 6 hours

Q26. Ratio of boat speed to stream speed is 5:3. The boat covers 160 km downstream in 5 hours. Find the time taken to cover 120 km upstream.

(A) 15 hours
(B) 20 hours
(C) 25 hours
(D) 30 hours

Q27. A boat takes 3 hours to go 45 km downstream. If the ratio of boat to stream speed is 4:1, find the time to cover 30 km upstream.

(A) 3.33 hours
(B) 3 hours
(C) 4 hours
(D) 2 hours

Q28. Ratio of boat speed to stream speed is 7:2. The boat covers 81 km downstream in 3 hours. Find the time to cover 50 km upstream.

(A) 10 hours
(B) 5 hours
(C) 6 hours
(D) 8 hours

Q29. A boat covers 24 km upstream and 36 km downstream in 6 hours. If the speed of the stream is 2 km/h, find the speed of the boat in still water.

(A) 10 km/h
(B) 8 km/h
(C) 12 km/h
(D) 6 km/h

Q30. A boat covers 200 km upstream and 300 km downstream in 20 hours. If the speed of the stream is 5 km/h, find the still water speed of the boat.

(A) 25 km/h
(B) 20 km/h
(C) 15 km/h
(D) 30 km/h