Question

A boat started from a point A, and the speed of boat is 50 km/hour in still water and speed of the stream is 10 km/hour. After reaching to point B boat stopped for 30 minutes and after that come back to point
A. The time taken by the boat in this journey is 15 hours and 30 minutes. What was the distance travel by the boat in one side?

A 400 km
B 260 km
C 300 km
D 360 km
E None of these
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