A swimmer can swim 68 km downstream and 45 km upstream in 9 hours and – McqOptions

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1.	A swimmer can swim 68 km downstream and 45 km upstream in 9 hours and he will take 2 hours more to swim 51 km downstream and 72 km upstream. Find the speed of the swimmer in still water.
A.	17
B.	15
C.	13
D.	9
Answer» D. 9

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