the zoom feature on a camera lens allows you to dilate what appears on the display. When you change from 100% to 500%, the new image on your screen is an enlargement scale factor is 5.

Question

The new image is 47.5 millimeters wide, what was the width of the previous image?

I DON'T KNOW HOW TO DO THIS, PLEASE HELP!

Answer 1

Let x = the width of the original image. The enlargement is 5 times as big, so its width is 5x.

5x = 47.5 mm

Solve for x