SOLUTION: The number of kilograms of water in a human body varies directly as the mass of the body.  An 87​-kg person contains 58 kg of water. How many kilograms of water are in a 60â€

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Question 1161916: The number of kilograms of water in a human body varies directly as the mass of the body.  An 87​-kg person contains 58 kg of water. How many kilograms of water are in a 60​-kg ​person?
Found 2 solutions by greenestamps, josgarithmetic:
Answer by greenestamps(13200) About Me  (Show Source):
You can put this solution on YOUR website!


87%2F58+=+60%2Fx

The fraction on the left simplifies....

3%2F2+=+60%2Fx

Should be easy to finish from there, either informally, or with formal algebra.

Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
w, kilograms of water
p, kilograms of a person (body)
k, variation constant

w=kp

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An 87​-kg person contains 58 kg of water.
-

k=w%2Fp
k=58%2F87
highlight%28w=%2858%2F87%29p%29

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How many kilograms of water are in a 60​-kg ​person?
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You can do this because you have the whole formula.





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Note, 87=3%2A29 and 58=2%2A29.