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Question

On 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 min. How long would it take to go from R to P?

A 3(1/3)hr

B 5hr

C 6(2/3)hr

D 7(1/3)hr

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