SOLUTION: The number of kilograms W of water in a human body varies directly as the total body weight B. A person who weighs 75 kg contains 54 kg of water. a) Find an equation of variation

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Question 247280: The number of kilograms W of water in a human body varies directly as the total body weight B. A person who weighs 75 kg contains 54 kg of water.
a) Find an equation of variation.
b) How many kilograms of water are in a person who weighs 95 kg?
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


If kilos of water vary directly as total weight, then



But we know that

So:



Solve for

Then substitute this value for into . Then you can determine either or if given the other just by substituting the known value.


John