1.

The speed of the boat in still water is 7 km/h. If the speed of the current is 3 km/h, then it takes 21/2 hours for a person to travel from P to Q in the upstream direction and from Q to P in the opposite direction. What is the distance between P to Q?

A. 50
B. 40
C. 45
D. 30
Answer» E.


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