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A motorboat whose speed is 27 km/hr in still water takes 20 minutes more to go 40 km upstream than to cover............

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A motorboat whose speed is 27 km/hr in still water takes 20 minutes more to go 40 km upstream than to cover the same distance downstream.
If the speed of the boat in still water is increased by 3 km/hr, then how much time will it take to go 44 km downstream and 54 km upstream?

posted Aug 4 by Prithvi

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