Question

A photograph of a painting measures 13 units by 17 units. If the scale factor is 1/3, what is the actual size of the painting?

Answer 1

39 units by 51 units

Explanation:

The painting is a scale factor of 1/3, so each side length is 1/3 of the original. To find the original multiply both side lengths by 3.

13x3 = 39

17 x 3 = 51