Question

On a certain map, 1 inch equals 40 miles. How many miles are in 3 1/4inches?

Answer 1

Let x be the number of miles in 34 inches

1 inch = 40 miles

3 1/4 inches = x

cross multiply

x = 40 multiply by 3 1/4

= 40 multiply by 13/4

=10 multiply by 13

=130 miles