a man weighed 160 pounds at age 20. Now, at age 60, he weighs 200 pounds. What percent of his afe 20 weight is his weight gain? If he went on a diet and got back to 160 pounds, what percent of his age 60 weight would be his weight loss? Explain why the weight gain is a different percentage than the weight loss even though it is the same number of pounds?
Gained 200 lbs - 160 lbs = 40 lbs
40 lbs / 160 lbs = 0.25 25% gain
Lost 200 lbs - 160 lbs = 40 lbs
40 lbs / 200 lbs = 0.20 20% loss
Although the amount gained is the same as the amount lost, they start from a different base weight,
i.e., 160 lbs versus 200 lbs.