Runner story problem
A 130 lb. person who runs at 6 mph for 1 hour burns about 720 calories . The same person, walking at 2 mph for 90 min burns about 240 calories. Suppose a 130-lb. person runs at 6 mph for 75 min. How far would the person have to walk at 2 mph in order to burn the same number of calories as burned when running?