A boat covers certain distance between two spots in a river taking t1 hrs going downstream and t2 hrs going upstream. What time will be taken by boat to cover same distance in still water?
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a boat covers certain distance between two spots in a river taking t1 hrs going downstream n t2 hrs going upstream. What time will be taken by boat to cover same distance in still water? t1 = time taken along downstream to cover distance x. t2 = time taken along upstream to cover distance
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