Q. 194.5( 51 Votes )

A steamer goes do

Answer :

Let the speed of the steamer in still water be x km/h


Speed in downstream = x + 1, Speed in upstream = x - 1


Distance = speed × time


According to the question


9(x + 1) = 10(x - 1)


By cross multiplication


9x + 9 = 10x - 10


x = 19 km/h


Distance between the ports = 9(19 + 1) = 180 km


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