Trains Boats and Streams Practice Test 4 with solutions

Question : 21 of 40

Marks: +1, -0

A boat running downstream covers a distance of 16 km in 2 hours while for covering the same distance upstream, it takes 4 hours. Find the speed of the boat in still water.

10 km/hr
8 km/hr
6 km/hr
4 km/hr

Validate

Solution:

Downstream speed =

{16}/2

= 8 km/hr.
Upstream speed =

{16}/4

= 4 km/hr.
Hence, speed of boat in still water =

1/2

(8 + 4) = 6 km/hr.

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