Calculate the mass in grams of each element in the body of a 57kg person

[mightyhealthy]

Homework Statement

The natural abundaces of elements in the human body, expressed as a percent by mass, are oxygen (o) 65%; carbon (C), 18%; hydrogen (H), 10%; nitrogen (N), 3.0%; calcium (Ca), 1.6%; phosphorous(P), 1.2%; all other elements 1.2%

Calculate the mass in gram of each element in the body of a 57-kg person

Homework Equations

this involves unit conversions 1000grams=1kg
don't know what else

The Attempt at a Solution

i am clueless

 

[Borek]

What does it mean 35% of something?