- A8 km/h
- B24 km/h
- C12 km/h
- D16 km/h
Step-by-Step Solution
Downstream = 20 km/h, so boat = 16 km/h. Upstream = km/h. (Subtracting 4 only once from 20 gives 16, the still-water speed.)
Answer: C) 12 km/h
Travelling with the current, a boat covers 40 km in 2 hours. The current flows at 4 km/h. What is the boat's speed against the current?
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