Boats and Streams - Quantitative Aptitude (MCQ) questions

1)   In 10 hours Mayur rows 30 kms upstream and 44 kms downstream. Also he travels 40 kms upstream and 55 kms downstream in 13 hours. What is speed of the boat in still water?
- Published on 13 Apr 17

a. 3 km/hr
b. 8 km/hr
c. 11 km/hr
d. 16 km/hr
Answer  Explanation 

ANSWER: 8 km/hr

Explanation:
boats and streams


2)   Raj swims 26 km downstream in same time as 14 km upstream. What is his speed in still water if speed of stream is 3 km/hr?
- Published on 12 Apr 17

a. 10 km/hr
b. 12 km/hr
c. 7 km/hr
d. 4 km/hr
Answer  Explanation 

ANSWER: 10 km/hr

Explanation:
boats and streams


3)   If upstream speed is 22 km/hr and downstream speed is 34 km/hr, what is speed of boat in still water?
- Published on 11 Apr 17

a. 28 km/hr
b. 56 km/hr
c. 17 km/hr
d. 11 km/hr
Answer  Explanation 

ANSWER: 28 km/hr

Explanation:
boats and streams


4)   Consider statements A and B given below and decide whether they are enough to find the time needed for covering same distance downstream as upstream if a boat travels 48 kms upstream in 6 hours.
Statement A – Boat’s speed in still water is 10 km/hr
Statement B – Current speed is 2 km/hr

- Published on 11 Apr 17

a. Only statement B is enough
b. Any one statement if given is enough to find the answer
c. Both statements together are needed to find the answer
d. Only statement A is enough
Answer  Explanation 

ANSWER: Any one statement if given is enough to find the answer

Explanation:
boats and streams


5)   3 towns P, Q and R are located at the bank of a stream. Distance of Q from P and R is same. Jeet rows from P to Q and Q to P in total 10 hours. Jeet also requires 4 hours to row from P to R. If the stream flows at a consistent rate what will be the ratio of Jeet’s speed in still water and speed of stream?
- Published on 17 Mar 17

a. 6:7
b. 5:3
c. 5:2
d. 7:6
Answer  Explanation 

ANSWER: 5:3

Explanation:
boats and streams


6)   What will be the boat's speed in still water and speed of river, if the boat takes 12 hours to row 48 km upstream and 8 hours to row the same distance downstream?
- Published on 17 Mar 17

a. Boat = 6 km/hr; River = 4 km/hr
b. Boat = 12 km/hr; River = 6 km/hr
c. Boat = 5 km/hr; River = 1 km/hr
d. Boat = 4 km/hr; River = 3 km/hr
e. Boat = 4 km/hr; River = 3 km/hr
Answer  Explanation 

ANSWER: Boat = 5 km/hr; River = 1 km/hr

Explanation:
boats and streams


7)   Raj swims for 6 ½ hours while going 24 km downstream and 36 km upstream. But he takes just 6 hours to swim 36 km downstream and 24 km upstream. At what rate is the river flowing?
- Published on 15 Mar 17

a. 6 km/hr
b. 3 km/hr
c. 2 km/hr
d. 4 km/hr
Answer  Explanation 

ANSWER: 2 km/hr

Explanation:
boats and streams


8)   Vijay rows a boat 80 km along the stream in 1 hour 20 minutes. Given that his rowing speed in still water is 45 km/hr, in how much time will he cover the same distance against the stream?
- Published on 15 Mar 17

a. 4 hours
b. 3 hours 10 minutes
c. 2 hours 40 minutes
d. 2 hours 30 minutes
Answer  Explanation 

ANSWER: 2 hours 40 minutes

Explanation:
boats and streams


9)   What will be Raj’s speed in still water as well as speed of the river, if he can go downstream at 18 km/hr and upstream at 10 km/hr?
- Published on 15 Mar 17

a. Raj = 10 km/hr ; River = 5 km/hr
b. Raj = 14 km/hr ; River = 4 km/hr
c. Raj = 28 km/hr ; River = 8 km/hr
d. Raj = 8 km/hr ; River = 28 km/hr
Answer  Explanation 

ANSWER: Raj = 14 km/hr ; River = 4 km/hr

Explanation:
boats and streams


10)   What is speed of Ram in still water and speed of river, if Ram covers 20 km in 1 hour swimming downstream and covers the same distance in 2 h swimming upstream?
- Published on 15 Mar 17

a. River = 6 km/hr ; Ram = 14 km/hr
b. River = 8 km/hr ; Ram = 12 km/hr
c. River = 4 km/hr ; Ram = 16 km/hr
d. River = 5 km/hr ; Ram = 15 km/hr
Answer  Explanation 

ANSWER: River = 5 km/hr ; Ram = 15 km/hr

Explanation:
boats and streams


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