Trains Boats and Streams Practice Test 1 with solutions

Question : 15 of 40

Marks: +1, -0

The boat goes 40 km upstream in 8 hours and 36 km downstream in 6 hours. Find the speed of the boat in still water.

Solution:

Upstream speed =

{40}/8

= 5 km/hr; Downstream speed =

{36}/6

= 6 km/hr
Hence, speed of the boat in still water =

1/2 (6+5)

{11}/2

= 5.5 km/hr

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