Kathy G. answered 11/21/20
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Jr/Sr High Math Tutor and SAT/ACT Tutor with 40+ years experience
Let the width be x. Then the length is 5x (5 time as long).
Area = length x width = (x) (5x) = 80 (80 was given as the area)
5x^2 = 80
x^2 = 1 6
x = 4 and -4
you can't have a negative width, therefore the width is 4 and the length is 5(4) =20