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Q: The ratio of speed of boat in still water to speed of stream is 8 : 1. It takes 4 hours by boat to cover 54 km in downstream & 42 km in upstream. Find the downstream speed of boat.

A. 25 kmph
B. 24 kmph
C. 21 kmph
D. 27 kmph
E. 23 kmph
Answer» E. 23 kmph


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