SOLUTION: A boat can travel 55 miles up the river in the same amount of time it takes to travel 65 miles down the same river. If the speed going down the river is 7 MPH faster than the spee
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Question 610762: A boat can travel 55 miles up the river in the same amount of time it takes to travel 65 miles down the same river. If the speed going down the river is 7 MPH faster than the speed goin gup the river, what is the speed of the boat going up the river?
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
t = d / r ___ the times are equal
55 / x = 65 / (x + 7)
"cross" multiplying ___ 55x + (7 * 55) = 65x
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