Arithmetic

Time, Speed & Distance

Medium

A man can row a boat at a speed of 8 km/hr. in still water. If the speed of water current is 2 km/hr. and it takes the man 2 hours to row the boat to a certain place and come back, how far is the place from the starting point?

6.25 km

9.5 km

8.5 km

7.5 km

✅ Correct Option: 4

Downstream speed $= 8 + 2 = 10$ km/hr and upstream speed $= 8 - 2 = 6$ km/hr.

If the distance is $d$ , then $d/10 + d/6 = 2$ , so $(3d + 5d)/30 = 2$ , giving $8d = 60$ and $d = 7.5$ km.

2026: 30 May Shift 2

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Solution

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