Please Help!!,

The dimensions of a photo of a mountain bike are 15cm by 12cm. An enlargement is to be made for a poster with dimensions 4.0m by 3.2m.

What is the scale factor of the poster to the nearest tenth?

1 answer

15 cm = .15 m

4.0 m / .15 m = 26 2/3 to 1

similarly
3.2 m / .12 m = 26 2/3 to 1

26 2/3 / 1 = 26.7/1