The scale on a different map is 1 inch represents 6 miles
A road on the map measures 2.5 inches.
How long is the road in real-life?

15

First of all, let us try to understand what does the scale mean.

It says that 1 inch in the map is equal to 6 miles on road, in real life.

So, if 1 inch on the map signifies 6 miles on road,

By unitary method, 2.5 inches on the map will signify (6×2.5) miles on road

to find the total number of combinations, multiply the quantity of each item by each other:

2 pairs of shoes x 3 pairs of shorts = 6 different combinations.