SOLUTION: The number of kilograms (W) of water in the human body varies directly as the total body weight (B). A person who weighs 100 kilograms contains 60 kilograms of water. How many kilo

Question 373755: The number of kilograms (W) of water in the human body varies directly as the total body weight (B). A person who weighs 100 kilograms contains 60 kilograms of water. How many kilograms of water are in a person who weighs 70 kilograms?

Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!



Hi,

Let x represent the kilograms of water in a person who weighs 70 kilograms

Setting up the proportion:



cross multiplying to solve for x

100gx = 70*60g^2

x = 4200g^2/100g = 42g, kilograms of water in a person who weighs 70 kilograms

 

RELATED QUESTIONS

The number of kg of water (W) in a human body varies directly as the total body weight... (answered by stanbon)
The number of kilograms W of water in a human body varies directly as the total body... (answered by solver91311)
DIRECT VARIATION
the number of kg of water (W) in a human body varies directly as the... (answered by Nate)
The number of kg of water (W) in s human body varies directly as the total body weight... (answered by stanbon)
The number of kilograms of water in a human body varies directly to the mass of the body.  (answered by Cromlix)
The number of kilograms of water in a human body varies directly as the mass of the... (answered by greenestamps,josgarithmetic)
Write the equation variation. ( inversely)
The number of kilograms y of water in a human  (answered by ewatrrr)
The weight of muscles in a human body is 40% of total body weight.  A person weighs 225... (answered by ewatrrr)
The body-mass index, or BMI, is used by physicians to assess a person's level of body... (answered by jorel1380)