The width of a rectangle is 3 inches less than its length. The area of the rectangle is 340 square inches. What are the length and width of the rectangle?

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(1) Answers

KatriceLaigo

A = WL
A = 340
W = L - 3
340 = (L-3)(L)
340 = L^2 - 3L
L^2 - 3L - 340 = 0
L = 20
W = l - 3
W = 20 - 3
W = 17
so the length is 20 inches and the width is 17 inches