A McDonalds Double Quarter Pounder with Cheese meal supersiz

A McDonald’s Double Quarter Pounder with Cheese meal, supersized, contains 1400 kilocalories of energy. A person walking burns 150 calories per mile walked. How many miles will you have to walk to counter eating this fine meal?

Solution

Energy contain in cheese meal is 1400 kcal

150 Cal. is burn when you walk 1 mile

To burn 1400 kcal you have to walk = 1400 /150 = 9.333 miles.

See the unit of energy carefully.

1 small kilocalorie (kcal) is equal to 1 large food calorie (Cal)

1 kcal = 1 Cal

1 small kilocalorie (kcal) is equal to 1000 small calories (cal)

1 kcal = 1000 cal