Question

The scale on a map of viginia shows tht 1 inch represents 30 miles. The actual distance from richmond, va to washington dc is 110 miles. On the map how many inches are between the two cities

Answer 1

1 inch = 30 miles;
x = 110 miles;

we criss cross it.

1 inch × 110 miles = 30 miles × x;
x = 1 inch × 110 miles / 30 miles;
x = 3.6666666