Tom has a large photo he wants to shrink to wallet-sized. It's width is 20 centimeters and it's len is 30 centimeters. If he wants the width to be 5 centimeters what should the length be?

Respuesta :

20/5 = 4 (scale factor is 4)

So divide 30 by 4 to get the new length

30/4 = 7.5cm