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A man who weighed 220 pounds completed a diet-and-exercise program. After the 12-week program, his body fat percentage had dropped from 30% to 20%, and his eight had dropped to 200 pounds. If every part of his body that is not fat or muscle has a constant weight of 120 pounds, how many pounds of muscle did he gain during the program?

 Jan 13, 2024
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220  x 30 % = 66 pounds of fat initially       and has 120 pounds of nonfat nonmuscle     220 - 66 -120 = 34 pounds of muscle etc

200 x 20 % =  40 pounds of fat                   plus 120 pounds of nonfat nonmuscle           200 - 40 - 120 = 40 pounds of muscle etc

 

40 - 34 = 6 pounds of muscle gained

 Jan 13, 2024

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