The scale on a map said that 1/2 inch represent 3 miles. if 2 towns are 3 inches apart on the map, what is the actual distance between the two towns?

18 miles

Step-by-step explanation:

You can start with the equivalence ...

1/2 in = 3 miles

and multiply it by 6.

6· (1/2 in) = 6· (3 miles)

3 in = 18 miles

Towns that are 3 inches apart on the map are 18 miles apart on the ground.

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Why 6? because that is the number 1/2 needs to be multiplied by to get 3. Said another way, ...

3 / (1/2) = 3·2 = 6

The two towns would be 18 miles apart because if one full inch is 6 miles then multiply that by 3 to get 18