Question

Sophie opened a picture of a tree on her cell phone screen and zoomed in 2.5 times. The new scale of the picture became 1 : 168. What would be the scale if it was zoomed in 4 times ? Please answer!

Answer 1

Explanation:

Assuming that it follows some sort of law, a proportion should answer the question. The problem: is the ratio an area or is it linear. I'll assume it is linear. If it is marked wrong, leave a note.

2.5/168::4/x Cross multiply

2.5x = 168 * 4

2.5x = 672 Divide by 2.5

x = 672/2.5

x = 268.8