A boat goes 48 km downstream in 20 h. It takes 4 h more to cover the same distance against the stream. What is the speed of the boat in still water?
Correct Answer: Description for Correct answer:
Speed downstream = \( \Large \frac{48}{20} \) = 2.4 km/h
Speed upstream = \( \Large \frac{48}{24} \) = 2 km/h
Therefore, Speed of boat in still water
= \( \Large \frac{1}{2} \left(2.4+2\right)=\frac{4.4}{2} \) = 2.2 km/h
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