A boat goes 12 km downstream in 2 hours and 12 km upstream in 3 hours. What is the speed of the current?
A1 km/h
B1.5 km/h
C2 km/h
D2.5 km/h
Explanation
Downstream speed = 12 / 2 = 6 km/h. Upstream speed = 12 / 3 = 4 km/h. Speed of current = (6 – 4) / 2 = 1 km/h.
Exam Relevance
- Topic: Age Problems, Time & Distance, Work
- Subtopic: Boats & Streams
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