A boat takes 2 hours 8 minutes longer to move a trip of 48km upstream than it takes on the return trip downstream. If the average speed of current is 4 km/hr.Find the speed of the boat in still water.
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time=dis/speed
let x be y be two speed so
48/x-y+48/x-y=2hr8min
let x be y be two speed so
48/x-y+48/x-y=2hr8min
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