I have been this for hours, yes it is a homework question, but did not turn it in last weeks when I was suppose to, but I have a test coming up, so gotta figure this out not sure how to formulate questions using a system of equations
The density of gold is $19.3g/cm^3$ and the density of silver is $10.5g/cm^3$ a certain crown is made entirely from silver and gold if the total volume of the grown is $220cm^3$, and the weight of the crown is $3823.6g$, what percentage of the total mass is gold?
I am not sure how to get around the units I mean I tried assigning x to be gold and y silver but this $g/cm^3$ how do you equate that to $3823.6g$ and have the unit match up. I mean all I have on my paper is $19.3x + 10.5y = 3823.6$ but I know that is wrong and where do I get the second equation. I am truly stuck and frustrated. my book doesn't have a solutions manual so I wouldn't know if it is right or wrong. Please help me set this up