a boat takes 60min to complete 40km in downstream and also trvael same distance in upstream. the speed of still water is 15 kmph .then find speed of the stream?
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according to the question the speed of the boat in downstream is 40 kilometre per hour
the speed of the boat in upstream is 15 kilometre per hour
so while traveling down streams the speed is equal to..... speed of the stream + the speed of the boat
while travelling upstream the speed is equals to is equals to speed of boat - the speed of stream
we got the equation as
x+y=40
x-y =15
where X is the speed of the boat and y is the speed of the stream
by solving these two equations we get
X is equals to 27.5 kmph
and y is equals 12.5 kmph
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