A boat travels 30 km upstream in a river in the same period of time as it takes to travel 50 km downstream. If the rate of the stream be 5 kmph, find the speed of the boat
in still water
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let speed of boat be X
30/ ( x-5) = 50/( x+5)
30 x + 150 = 50 x - 250
20x= 400
x= 20
30/ ( x-5) = 50/( x+5)
30 x + 150 = 50 x - 250
20x= 400
x= 20
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