Question

A picture is 3 inches wide and 5 inches long a photographer enlarges it so it is 16.5 inches wide and 27.5 inches long what scale factor was used to enlarge the picture ?

Answer 1

5.5

Explanation:

Answer 2

5.5

We can use this equation to figure out what number can be multiplied by 3 to get 16.5.

• 16.5 ÷ 3 = 5.5

The same can be applied to 5 and 27.5.

• 27.5 ÷ 5 = 5.5

To check, we can use this equation:

• 5.5 × 3 = 16.5

Same with the others:

• 5.5 × 5 = 27.5

Therefore, the scale factor used is 5.5.