Question

on a map 1 inch equals 13.9 miles if two cities are 3.5 inches apart on the map how far are they actually apart? (type a decimal)

Answer 1

1) Since we have a scale let's find out the distance between them

Given the relationship, since they are proportional let's cross multiply them:

1 inch = 13. 9 miles

3.5 x

2) Writing as ratios:

`\begin{gathered} (1)/(3.5)=(13.9)/(x) \\ x=13.9\text{ }*3.5 \\ x=48.65 \end{gathered}`

3) If they are 3.5" according to that proportion, then those two cities are 48.65 miles apart.