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Mathematics, 17.08.2021 19:40 skyrileycasting

A village C is 12km upriver from a village D. It takes 20mins to go from D to C and back to D by boat. If the boat travels at 6 km per hr upriver and (6+y)km per hr downriver, what is the value of y?

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A village C is 12km upriver from a village D. It takes 20mins to go from D to C and back to D by boa...
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