What is the scale factor of 25ft by 75ft and 1:15

25ft by 75ft:

We rewrite the expression:

25/75

We simplify the numerator and denominator:

25/75 = 5/15 = 1/5

The scale factor is:

k = 1/5

On the other hand:

For 1:15:

We rewrite the expression:

1/15

The scale factor is:

k = 1/15