Water Question!

Question

The human body is 65% water. A certain man weighed 193 lb. After 1 year on a diet, his weight decreased by 13%.After the diet, how much of the man's weight was water?

 

Please help me! I have a test in a few hours and I don't understand why I don't get this question! Maybe my brain is fuzzy from studying 

Answer 1

Hi Kyra,

 

Step 1 is to figure out the man's new weight after his diet. . . we need to find 13% of 193 lb and then subtract that number from 193.

 

13% of 193 = 0.13 x 193 = 25

 

193 - 25 = 168 lb

 

Step 2 is to figure out how much of this new weight is water . . .that's 65% of 168

 

65% x 168 = 0.65 x 168 = 109.2 lb.

 

Dan