A 150-lb person who runs at 8 mph for 1 hr burns about 840 calories. The same person, walking at 2 mph for 90 min, burns about 240 calories. Suppose...

• A 150-lb person who runs at 8 mph for 1 hr burns about 840 calories.  The same person, walking at 2 mph for 90 min, burns about 240 calories.  Suppose a 150-lb person runs at 8 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?

The person has to walk __________________miles.

(Type an integer or a decimal.)