Ghats A and B are 60 km apart, with A upstream. At 8 a.m. boat P (14 km/h in still water) leaves A downstream and boat Q (16 km/h in still water) leaves B upstream. The river flows at 2 km/h. How far from A do they meet?

Question

Accepted Answer

32 km. Closing speed = 16 + 14 = 30 km/h (the current cancels), so they meet after 2 h. P has gone 16 × 2 = 32 km from A.

Ghats A and B are 60 km apart, with A upstream. At 8 a.m. boat P (14 km/h in still water) leaves A downstream and boat Q (16 km/h in still water) leaves B upstream. The river flows at 2 km/h. How far from A do they meet?

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