1.

On a river , Q is the mid - point between two points P and R on the same bank of the river. A boat can go from P to Q and back in 12 hours, and from P to R in 16 hours 40 minutes. How long would it take to go from R to P?~!

A. 33/7 hr
B. 5 hr
C. 62/3 hr
D. 71/3 hr
Answer» E.


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