Laura took a 3-inch by 5-inch picture What scale factor should she use if the dimensions of the frame are 7.5 inches by 12.5 inches?

Question

i need some help on this problem please help me.

Answer 1

The scale factor = same side length divided by the same side length; that is 7.5÷3=2.5; same idea, 12.5÷5=2.5.

The scale factor is 2.5 which means when building another larger frame, enlarger 2.5 for both sides. 

Good luck.

Peter G.