Answer:
75
Step-by-step explanation:
In running 0.6 miles, you have gone from 300 remaining to 255 remaining, so have burned ...
300 -255 = 45 . . . . . calories
The rate in calories per mile is ...
(45 cal)/(0.6 mi) = 75 cal/mi
At the rate of the first 0.6 miles, you will burn 75 calories running 1 mile.
