Michael J. answered • 07/09/15

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Effective High School STEM Tutor & CUNY Math Peer Leader

**Rectangle A:**

length = 5 in

width = 3 in

Area = 15 in

^{2}**Rectangle B:**

width = 3 - 3(0.5) = 1.5 in

Area = 15 in

^{2}length = Area / width

= 15 in

^{2}/ 1.5 in = 10 in

Compare the two lengths, 5 in and 10 in.

5 + 5r = 10

5r = 5

r = 1

Multiply the value of r by 100 since r is in decimal form.

It must be 100% longer than rectangle A.