Question

A photo originally measuring 11 inches by 9 inches needs to be enlarged to a size of 55 by 45 inches. Find the scale factor of the enlarged photo. (JUSTIFY)

Answer 1

scale factor = 5

Explanation:

To determine the scale factor calculate the ratio of corresponding sides of the enlargement to the original, that is

scale factor =
`(55)/(11)` =
`(45)/(9)` = 5