Question 540735: Going down a river, a boat went 12 km/h. Going up the river, the boat went only 2 km/h. How fast would the boat go if there was no current? Found 2 solutions by mananth, Alan3354:Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! let speed of boat in still water be x
current speed be y
with curent speed = x+y = 12
against current speed = x-y =2
x+y=12
x-y=2
add the two equations
2x=14
x=7 speed of boat in still water
You can put this solution on YOUR website! Going down a river, a boat went 12 km/h. Going up the river, the boat went only 2 km/h. How fast would the boat go if there was no current?
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The average (12 + 2)/2 = 7 km/hr
