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Question

A boat can travel 20 km more in downstream than that in upstream, in 10 hours while the difference between the time taken by the same boat to travel 210 km and 126 km, in still water, is 4 hours. Find the approximate time taken by the boat to travel 220 km in downstream and 183 km in upstream.

A 10 hours

B 19 hours

C 12 hours

D 15 hours

E None of these

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