Question

The scale on a highway construction drawing is 0.5 inches for every 45 miles. If the drawing shows the highway is 4 inches long, how long is the actual highway?

Answer 1

`360\ miles`

Explanation:

we know that

using proportion

`(0.5)/(45) (in)/(mi)=(4)/(x) (in)/(mi) \\ \\x=45*4/0.5\\ \\x= 360\ miles`