A man 8 km/hr in still water. If the river is running at 2 km/hr, it taken 32 minutes to row to a place and back. How for is the place?

Question

Accepted Answer

∵ D/(8 - 2) + D/(8 + 2) = 32/60 ⇒ D/6 + D/10 = 32/60 ⇒ 10D + 6D = 32 ∴ D = 2 km

Discussion & Comments