speed of the boat in still water is 15 km/hr can go 45km upstream and return downstream to the original poi in 6 jrs 45min. find the speed of the stream pls ans with explanation
speed of the boat in still water is 15 km/hr can go 45km upstream and return downstream to the original poi in 6 jrs 45min. find the speed of the stream pls ans with explanation
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speed of boat is 15km/hrs
so the equation will be
upstream speed x-15 km/hrs
downstream speed x+15km/hrs
45÷x-15+45÷x+15=405
then solve the equation and you will get x