1.

A man can row 10 km/h in still water. If the river is running at 3 km/h, it takes 6 hours more to go upstream than downstream for the same distance. How far is the place in km ?

Answer»

91 km



Let the DISTANCE be X
∴ x/10-3 - x/10+3 = 6
∴ x = 91 km
∴ x/7 - x/13 = 6
13X - 7x/91 = 6



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