SOLUTION: The excursion boat on the river takes 2½ hours to make the trip to a point 12 miles upstream and to return. If the rate at which the boat travels in still water is 5 times the rate
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Question 151833: The excursion boat on the river takes 2½ hours to make the trip to a point 12 miles upstream and to return. If the rate at which the boat travels in still water is 5 times the rate of the river current, what is the rate of the current? Answer by checkley77(12844) (Show Source):
You can put this solution on YOUR website! 12/6X+12/4X=2.5
(12*2+12*3)/12X=2.5
(24+36)/12X=2.5
60=2.5*12X
60=30X
X=60/30
X=2 MPH ANSWER FOR THE CURRENT.
PROOF:
12/(6*2)+12/(4*2)=2.5
12/12+12/8=2.5
1+1.5=2.5
2.5=2.5
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