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Question

The speed of the stream is 20 km/h. Boat ‘A’ covers 120 km distance against the stream in 6 hours and boat ‘B’ covers 120 km distance against the stream in 5 hours. The speed of boat ‘B’ in still water is how much percent of the speed of boat ‘A’ in still water?

A 110%

B 100%

C 115%

D 112%

E None of these

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