A boat travels 24 km downstream in 2 hours and 16 km upstream in 4 hours. Find the speed of the stream.

Topic: Speed, Time &amp; Distance
Subtopic: Boats and Streams

A2 km/h

B3 km/h

C4 km/h

D5 km/h

Explanation

Downstream speed = 24 / 2 = 12 km/h. Upstream speed = 16 / 4 = 4 km/h. Speed of stream = 0.5 * (12 – 4) = 4 km/h.

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