Question

Uni made a model of a 1970 Ford Mustang using a scale of .5 inches = 9 in. If the actual car is 15 ft long, how long is the model car?

Answer 1

The model car is 10 inches long

Explanation:

To solve this question, we use conversion of units

Feet to inches.

Each feet has 12 inches.

The car is 15ft long.

So the car has 15*12 = 180 inches.

.5 inches = 9 in.

Rule of three

.5 inches - 9 inches

x inches - 180 inches

`9x = 180*0.5`

`9x = 90`

`x = (90)/(9)`

`x = 10`

The model car is 10 inches long