a boat can travel 8 km an hour in still water, but it takes thrice as much tim

Question

a boat can travel 8 km an hour in still water, but it takes thrice as much time for travelling the same distance against the current. the speed of the current (in kmph) is:

Options:

A . 29

B . 21

C . 41

D . 30

Answer: Option C
Explanation :

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