Question

5. Sally's estimated energy requirement, based upon her age, height, and weight, is approximately 200o kcalories per day. What is the maximum number of kealories per day that she can consume to lose 3 pounds per month? Assume 1 month is 3o days. O a. 1650 kcalories O b. 1400 kcalories O c. 1700 kcalories O d. 1530 kcalories e. 1200 kcalories

Answer 1

a) 1650 kcal,

In 1958, a scientist named Max Wishnofsky concluded that 1 pound of body weight implies to 3500 kcal of energy.

It is dependent on old calculation with some assumption like, 1 pound = 454 g, calorific value of pure fat = 8.7 - 9.4 kcal/g, body fat tissue = 87% fat.

So, the calculation comes like,

87 (454 ×-) × 9 100

= 3554 kcal. $\approx$ 3500 kcal.

According to this question, our objective is to loose 3 pound of weight over 1 month of time period.

Which implies burning up of (3* 3500) = 10500 kcal over 30 days of time.

So, burning up of (10500/30) = 350 kcal per day.

As it is given that the required calories needed for this individual is 2000 kcal/day, now she need to take (2000 - 350) = 1650 kcal/day to loose 3 pound of weight /month.