A boat travels 24 km upstream in 4 hours and 36 km downstream in 3 hours. What is the speed of the current?

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

A2 km/h

B3 km/h

C4 km/h

D5 km/h

Explanation

Upstream speed u = 24 / 4 = 6 km/h. Downstream speed v = 36 / 3 = 12 km/h. Current speed = (v – u) / 2 = (12 – 6) / 2 = 3 km/h.

Exam Relevance

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