SOLUTION: The Length of a rectangle is twice the width; the perimeter is 42 inches. Find the width

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Question 123669: The Length of a rectangle is twice the width; the perimeter is 42 inches. Find the width
Answer by nadinadan(32) About Me  (Show Source):
You can put this solution on YOUR website!
Let's change the words into math operations.
L=2W
2L+2W=42 Replace the L from the first equation into the second one.
so, 4W+2W=42 so 6W=42 so W=7 and replace W in the first equation and L=2x7=14