Question

A map says that Philadelphia and New York are 90 miles apart. If the 1 inch equals

10 miles, how a far apart are Philadelphia and New York on the map?
90 miles

Answer 1

9 inches

Explanation:

Don't feel confused, just break this thing down. So I know that 1 inch equals 10 miles on a map (before GPS we had to use those maps). If 1 inch equals 10 miles, or you could say 1:10 or 1 to 10, how many go with 90, or what times 10 equals 90? I know that 1 goes with 10 (multiply by 10) so 9 has to go with 90 because 9 times 10 equals 90.