Boat and Stream MCQs for Competitive Examination
Solve the following problems.
Q. 1
A man rows 750 m in 600 seconds against the stream and returns in 7(1/2) minutes. Its rowing speed in still water is (in km/hr).
(A) 5.5
(B) 5.75
(C) 5
(D) 5.25
Answer: (D) 5.25
Explanation: N/A
Q. 2
The speed of a boat along and against the current is 12 km/hr and 8 km/hr respectively. Then the speed of the current in km/hr is
(A) 5
(B) 4
(C) 3
(D) 2
Answer: (D) 2
Explanation: N/A
Q. 3
The speed of a stream is 3 km/hour and the speed of a man in still water is 5 km/hour. The time taken by the man to swim 26 km downstream is
(A) 8(2/3) hours
(B) 3(1/4) hours
(C) 13 hours
(D) 5(1/5) hours
Answer: (B) 3(1/4) hours
Explanation: N/A
Q. 4
A man can swim at the rate of 4 km/ hour in still water. If the speed of the water is 2 km/hour, then the time taken by him to swim 10 km upstream is
(A) 2(1/2) hours
(B) 3(1/2) hours
(C) 5 hours
(D) 4 hours
Answer: (C) 5 hours
Explanation: N/A
Q. 5
A boy can swim in still water at a speed of 10 km/hr. If the speed of the current would have been 5 kmph, then the boy could swim 60 km in how much time?
(A) Upstream in 4 hours
(B) Downstream in 12 hours
(C) Upstream in 6 hours
(D) Downstream in 4 hours
Answer: (D) Downstream in 4 hours
Explanation: N/A
Q. 6
If a boat goes 100 km downstream in 10 hours and 75 km upstream in 15 hours, then the speed of the stream is
(A) 2 km/hour
(B) 2.5 km/hour
(C) 3 km/hour
(D) 3.5 km/hour
Answer: (B) 2.5 km/hour
Explanation: N/A
Q. 7
A man rows 40 km upstream in 8 hours and a distance of 36 km downstream in 6 hours. Then the speed of stream is
(A) 0.5 km/hour
(B) 1 km/hour
(C) 1.5 km/hour
(D) 3 km/hour
Answer: (A) 0.5 km/hour
Explanation: N/A
Q. 8
A boat travels 24 km upstream in 6 hours and 20 km downstream in 4 hours. Then the speed of boat in still water and the speed of water current are respectively.
(A) 4.5 km/hour and 3 km/hour
(B) 4.5 km/hour and 0.5 km/hour
(C) 4 km/hour and 2 km/hour
(D) 5 km/hour and 2 km/hour
Answer: (B) 4.5 km/hour and 0.5 km/hour
Explanation: N/A
Q. 9
A man swims downstream a distance of 15 km in 1 hour. If the speed of the current is 5 km/hour, then the time taken by the man to swim the same distance upstream is
(A) 1 hour 30 minutes
(B) 45 minutes
(C) 2 hours 30 minutes
(D) 3 hours
Answer: (D) 3 hours
Explanation: N/A
Q. 10
The current of a stream runs at the rate of 4 km an hour. A boat goes 6 km and comes back to the starting point in 2 hours. The speed of the boat in still water is
(A) 6 km/hour
(B) 8 km/hour
(C) 7.5 km/hour
(D) 6.8 km/hour
Answer: (B) 8 km/hour
Explanation: N/A
Q. 11
The speed of a boat in still water is 10 km/hr. It covers (upstream) a distance of 45 km in 6 hours. The speed (in km/hr) of the stream is
(A) 2.5
(B) 3
(C) 3.5
(D) 4
Answer: (A) 2.5
Explanation: N/A
Q. 12
A sailor goes 12 km downstream in 48 minutes and returns in 1 hour 20 minutes. The speed of the sailor in still water is
(A) 12 km/hour
(B) 12.5 km/hour
(C) 13 km/hour
(D) 15 km/hour
Answer: (A) 12 km/hour
Explanation: N/A
Q. 13
A motorboat covers a certain distance downstream in a river in 3 hours. It covers the same distance upstream in 3 hours and a half. If the speed of water is 1.5 km/h, then the speed of the boat in still water is
(A) 17 km/hour
(B) 17.5 km/hour
(C) 19 km/hour
(D) 19.5 km/hour
Answer: (D) 19.5 km/hour
Explanation: N/A
Q. 14
A man can row 30 km downstream and return in a total of 8 hours. If the speed of the boat in still water is four times the speed of the current, then the speed of the current is.
(A) 1 km/hour
(B) 2 km/hour
(C) 3 km/hour
(D) 4 km/hour
Answer: (B) 2 km/hour
Explanation: N/A
Q. 15
A person can row 7(1/2) km an hour in still water and he finds that it takes him twice as long to row up as to row down the river. The speed of the stream is
(A) 2 km/hour
(B) 2(1/2) km/hour
(C) 3 km/hour
(D) 3(1/3) km/hour
Answer: (B) 2(1/2) km/hour
Explanation: N/A
Q. 16
The speed of a boat along the stream is 12 km/h and against the stream is 8 km/h. The time taken by the boat to sail 24 km in still water is
(A) 2 hours
(B) 3 hours
(C) 2.4 hours
(D) 1.2 hours
Answer: (C) 2.4 hours
Explanation: N/A
Q. 17
The speed of a boat is 5 km per hour in still water and the speed of the stream is 3 km per hour. If the boat takes 3 hours to go to a place and come back, then the distance of the place is
(A) 3.75 km
(B) 4 km
(C) 4.8 km
(D) 4.25 km
Answer: (C) 4.8 km
Explanation: N/A
Q. 18
The speed of a boat along and against the current is 14 km/hr and 8 km/hr respectively. The speed of the current is
(A) 11 km/hour
(B) 6 km/hour
(C) 5.5 km/hour
(D) 3 km/hour
Answer: (D) 3 km/hour
Explanation: N/A
Q. 19
The speed of a boat in still water is 6 Km/hr and the speed of stream is 1.5 Km/hr. A man rows to a place at a distance of 22.5 Km and comes back to the starting point. The total time taken by him is
(A) 6 hours
(B) 8 hours
(C) 10 hours
(D) 4 hours
Answer: (B) 8 hours
Explanation: N/A
Q. 20
A boat goes 20 km downstream in one hour and the same distance upstream in two hours. The speed of the boat in still water is
(A) 15 km/hour
(B) 10 km/hour
(C) 5 km/hour
(D) 7.5 km/hour
Answer: (A) 15 km/hour
Explanation: N/A