SOLUTION: Use two equations in two variables to solve the application. A carpenter wants to cut a 15-foot board into two pieces so that one piece is 4 times as long as the other. How long

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Question 1130659: Use two equations in two variables to solve the application.
A carpenter wants to cut a 15-foot board into two pieces so that one piece is 4 times as long as the other. How long should each piece be (short and long pieces)?

Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
parts x and y

system%28x%2By=15%2Cy=4x%29
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simple substitution
x%2B4x=15
5x=15
x=3--------------y=12