a fishing boat took 3 hours to travel 36 km up stream against the current. the same trip downstream took 2 hours. what was the speed of the river current?
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Answer:
speed of boat is 15km per hour and speed of flow of water is 3km per hour
Step-by-step explanation:
Let speed of boat be x in still water and speed of water be y. km per hour
Total distance to travel =36km
in upstream
3x-3y=36
X-y=12
in downstream
2x+2y=36
X+y=18
on adding both equation
x-y+x+y=12+18
2x=30
x=15
then y=18-15=3
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