Lessons

General Aptitude
14.2 Boats and Streams - Data Sufficiency 1

01 02 03
1 / 3

Q.

What is the speed of the boat in still water?

I. 

The boat covers a distance of 48 kms in 6 hours while running upstream.

 II. 

The boat covers the same distance in 4 hours while running downstream.

View Answer

Correct choice: D

Explanation:

I. Speed upstream = 48 km/hr = 8 km/hr.
6
II. Speed downstream = 48 km/hr = 12 km/hr.
4
Speed of the boat = 1 (8 + 12) km/hr = 10 km/hr.
2

Thus, I and II together give the answer.

∴ Correct answer is (E).

1 / 3