Question

three inches on a map represent 100 miles. The distance on the map between two cities is 7 1/2 inches . What is the distance between the cities ?

Answer 1

(7.5/3)(10)=distance between cities

Answer 2

We first find how many miles is represented by one inch so we do
100/3
Then to find how many miles in 7.5 inches we do
100/3 x 7.5
As we are multiplying the number of miles in one inch by the number of inches you are finding.
You can also use the ratio method which you then do
(7.3/3) x 100