Question

As an estimation we are told 5 miles is 8 km.
Convert 72 km to miles.

Answer 1

45 miles

Explanation:

5 miles = 8 km

72 km = 9 * 8 km

Since 8 km = 5 miles, replace 8 km with 5 miles

72 km = 9 * 8 km = 9 * 5 miles = 45 miles