Question

A scale model of a school bus is 3 inches long. The actual school bus is 45 feet long. Which statement(s) are true?

The scale of the model is 1 in.:5.6 ft.
The scale of the model is 1 in.:15 ft.
The scale factor is 1:180.
The scale factor is 1:540.

Answer 1

Answer: The scale factor is 1:180

Explanation:

15 feet in inches = 540 inches, divided by 3 because the current scale factor is 3:540 to get 1:180

Answer 2

The scale of the model is 1 in.:15 ft.

Explanation:

In order to find this, first express the terms that you know.

3 in.:45 ft.

Now simplify by dividing both by the greatest common factor, which in this case is 3.

1 in.:15ft.