Question

Suppose you need 2400 Calories per day just to stay at your present weight. If you went on a strict diet of 2000 Calories per day, how long would it take you to lose 5 pounds? (1 pound of fat is the equivalent of about 4100 Calories.)

Answer 1

Note that, 1 pound fat = 4100 calries,

we need to loose 5 pounds of fat, It means we need to give up on 4100*5 = 20,500 calories.

Before loosing weight, we were taking 2400 calories per day,

During our strict diet, we were taking 2000 calories per day which makes a difference of 400 calories per take means we are taking 400 calories less.

Now if we are giving up on 400 calories per day, then to loose 20,500 calories, we need

no. of days = 20,500 / 400 = 51.25 days