The number of kilograms of water in a body of a person varies directly as the mass of the person. If a person with a mass of 90 kg contains 60kg of water, how many kilograms of water are in a person with a mass of 130 kg?
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The number of kilograms of water in a body of a person varies directly as the mass of the person. If a person with a mass of 90 kg contains 60kg of water, how many kilograms of water are in a person with a mass of 130 kg?
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Answer:
let y be the number of kilograms of water in a body of a person
and x as the mass of a person
since Direct Variation siya
y = kx
y=90 \\
x=60 \\
k=?
divide both sides by 60