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Question

"A boat covers 66 km upstream and 98 km downstream in a total of 9 hours. Determine the time required for the boat to travel 48 km upstream and 112 km downstream, given that the boat's downstream speed is 40% higher than its speed in still water."

A 12 hrs

B 8 hrs

C 15 hrs

D 20 hrs

E None of these

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