SOLUTION: what is the length of a rectangle that is twice the width; with a perimeter that is 42 inches. find the width

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Question 145515: what is the length of a rectangle that is twice the width; with a perimeter that is 42 inches. find the width
Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
let width = w
length = 2w
P = 2l + 2w
42 = 2(2w) + 2w
42 = 4w + 2w
42 = 6w
7 = w