Question

Which element makes up 1/400 of the human body ? Magnesium, Potassium, Sodium, or Sulfur

Answer 1

Magnesium makes up 1/400 of the human body

Answer 2

A. Magnesium.

Explanation:

We are asked to find element which makes up 1/400 of the human body.

Let us convert 1/400 to percentage.

`(1)/(400)* 100\%`

`(1)/(4)\%`

`0.25\%`

We know that amount of magnesium in human body is approximately 0.25%, therefore, Magnesium makes up 1/400 of the human body.