Question

Nash is making a framed enlargement of a Mary Cassatt postage stamp to present to a retired postmaster. He enlarges the stamp using a scale of 2 inches to 1 centimeter. If the actual length of the stamp is 3 centimeters and its width is 5 centimeters, what are the dimensions of the scale picture?
The length is 6 inches, and the width is 10 inches.
The length is 1.5 inches, and the width is 2.5 inches.
The length is 5 inches, and the width is 10 inches.
The length is 5 inches, and the width is 7 inches.

Answer 1

use the scale factor 2 inch/1 cm to set up a proportion to find the corresponding new dimensions

for example: for length = 3cm, let 2 inch/1 cm = x inch/3cm to find the scaled-up length, and repeat this process with the width