Question

On the scale drawing of a car, the length from bumper to bumper is 6 inches. The car’s actual length, from bumper to bumper, is 16 feet. How many inches would be used to represent an actual length on the car of 10 feet? Explain or show your reasoning. Use

Answer 1

To represent an actual length on the car of 10 feet, 3.75 inches would be used.

Explanation:

This can be done by using propirtions.

6 inches : 16 feet

divide both ratios by factor 1/16

6/16 inches : 16/16 feet

1 feet : 6/16 inches

multiply both ratio's by 10

10 * 1 feet : 10 * 6/16 inches

10 feet : 60/16 inches

10 feet : 3.75 inches

To represent an actual length on the car of 10 feet, 3.75 inches would be used.