header bg

Question:

On a map, 1 centimeter represents 4 miles. A distance of 10 miles would be how far apart on the map?

A 2(1/2) centimeters
Explaination

The proportion 1cm/4miles =x cm/10miles models this situation. Cross multiply. 1 × 10 = 4x, so 10 = 4x and x=10/4=2(1/2).