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Question

The ratio of Alex's boat speed in calm water to the speed of the stream is 5:1, respectively. If the boat can traverse 144 km against the current and 360 km with the current in a total time of 8 hours, determine how long it takes for the boat to cover a distance of 192 km in calm water.

A 3 hrs 10 mins

B 2 hrs 12 mins

C 3 hrs 12 mins

D 7 hrs 34 mins

E none of these

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