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 min. How long would it take to go from R to P?
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Q:
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 min. How long would it take to go from R to P?
- 1$$3{3\over7}hr$$false
- 2$$7{4\over3}hr$$false
- 3$$6{2\over3}hr$$false
- 4$$7{1\over3}hr$$true
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