# A steamer goes downstream frm one city to another in 15 hours,come back upstream in 20 hours.if the speed of water is 3 km\hr.find the distance be tween the 2 cities

2
by sonu45

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by sonu45

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Therefore,

=> speed downstream = (x+3) km/hr

=> speed upstream = (x-3) km/hr

Distance = Speed * Time

Assuming distance between the two cities is y km,

=> Downstream, y = (x+3)*15

=> Upstream, y = (x-3)*20

=> (x-3)*20 = (x+3)*15

=> 20x-60 = 15x+45

=> 5x = 105

=> x = 21 km/hr

Therefore, distance y = (21-3)*20 =