Question

If you weigh 100 kg, how much would you weigh if all the water were removed from your body?

Answer 1

Well 60% of your body is water. That means that the 40% is not water. If you weigh 100kg then you would weigh 40kg without water.

Answer 2

Generally, 60% of the mass of body is water.

So, amount of water in 100 kg person is:

`100 kg* (60)/(100) = 60 kg`

In order to calculate the mass of a person if all the water were removed, then:

`Mass of the body - Mass of the content of water in the body`

Mass of the body =
`100 kg`[

Mass of the content of water in the body =
`60 kg`

Substituting the values:

Mass of a person if all the water were removed =
`100 kg -60 kg = 40 kg`.

Hence the mass of a person who weighs
`100 kg` will weigh
`40 kg` if all the water were removed from the body.