Ryan would like to lose some weight.His energy needs are 2,400 kcal/day.If he eats about 1,900 kcalories every day,in four weeks approximately how much weight will Ryan have lost due to changes in his diet? Assume 0.5 kg fat = 3500 kcal.

Question

Quizplus · Accepted Answer

First, we need to calculate Ryan's daily calorie deficit:

Daily calorie deficit = Energy needs - Calorie intake
Daily calorie deficit = 2,400 - 1,900 = 500 kcal

To calculate how much weight Ryan will lose in four weeks, we need to determine how many calories he will burn in that time period. There are 7 days in a week, so four weeks is 28 days.

Calories burned in 28 days = Daily calorie deficit x Number of days
Calories burned in 28 days = 500 x 28 = 14,000 kcal

Since 0.5 kg of fat is equivalent to 3,500 kcal, we can calculate how many kilograms of fat Ryan will lose:

Weight loss = Calories burned / (0.5 kg fat / 3,500 kcal)
Weight loss = 14,000 / (0.5 / 3,500)
Weight loss = 8 kg

Therefore, Ryan will lose approximately 2 kg of weight due to changes in his diet.

Ryan Would Like to Lose Some Weight