The speed of a boat in still water is 8 kilometer per hour. If the boat covers 16.5 kilometer upstream in 3 hours, find the speed of the river.
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total distance covered = 8 +16.5=24.5
total time taken = 1+3=4
so,average speed =24.5/4=6.125
total time taken = 1+3=4
so,average speed =24.5/4=6.125
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