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Aptitude - Boats and Streams

@ : Home > Aptitude > Boats and Streams > General Questions

Overview

Exercise

"The secret to creativity is knowing how to hide your sources."
- Albert Einstein
1. 

A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream.

A. 2 hoursB. 3 hours
C. 4 hoursD. 5 hours

2. 

A man's speed with the current is 15 km/hr and the speed of the current is 2.5 km/hr. The man's speed against the current is:

A. 8.5 km/hrB. 9 km/hr
C. 10 km/hrD. 12.5 km/hr

3. 

A boat running upstream takes 8 hours 48 minutes to cover a certain distance, while it takes 4 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and speed of the water current respectively?

A. 2 : 1B. 3 : 2
C. 8 : 3D. Cannot be determined
E. None of these

4. 

A motorboat, whose speed in 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. The speed of the stream (in km/hr) is:

A. 4B. 5
C. 6D. 10

5. 

In one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream. The speed of the boat in still water (in km/hr) is:

A. 3 km/hrB. 5 km/hr
C. 8 km/hrD. 9 km/hr



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