the number of kilograms of water in a persons body vaires directly as the persons mass. a persons with a mass of 90 kg contains 60 kg of water. how many kilograms of water are in a person whos mass is 75kg
To solve this problem, we can set up a proportion:
mass1 / water1 = mass2 / water2
where mass1 = 90 kg, water1 = 60 kg, mass2 = 75 kg, and we'll solve for water2.
90 / 60 = 75 / water2
Cross-multiplying:
90 * water2 = 75 * 60
water2 = (75 * 60) / 90
water2 = 4500 / 90
water2 = 50
Therefore, a person with a mass of 75 kg would contain 50 kg of water.