On a particular road map, 0.5 inch represents 18 miles. About how many miles apart are two towns that are 2.5 inches apart on the map?

A.) 18

B.) 22.5

C,) 36

D.) 45

E.) 90

A.) 18

B.) 22.5

C,) 36

D.) 45

E.) 90

**Set up a proportion.**

0.5 inch 2.5 inches

------------ = ---------------------- {set up a proportion, comparing inches to miles}

18 miles x miles

0.5x = 45 {cross-multiplied}

x = 90 {divided each side by 0.5}

**E.) 90**

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