Answer:5% of 1200 calories is 60 calories.
Explanation:
b
If he wants to burn 60 calories and walking on the treadmill for an hour burns 200 calories, then you can set up a prportion:
60 cal 200 cal
---------- = ------------
x mins 60 mins
Cross multiply to get 3600=200x
x=18
He would have to walk for 18 minutes in order to burn 5% of the calories he consumed for lunch.