SOLUTION: Eduardo created a metal containing 35% gold by combining two other metals. One of these other metals weighed 2 kg and contained 15% gold. If the other weighed 8kg then what percent

Question 691461: Eduardo created a metal containing 35% gold by combining two other metals. One of these other metals weighed 2 kg and contained 15% gold. If the other weighed 8kg then what percent of it was gold?
I believe I would set up an equation .35(x + .15) = 2(.15) +8x where x is % of gold in metal 2, but I don't know if that's right, or where to go from there
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Eduardo created a metal containing 35% gold by combining two other metals. One of these other metals weighed 2 kg and contained 15% gold. If the other weighed 8kg then what percent4 of it was gold?
-----
Equation:
gold + gold = gold
0.15*2 + x(8) = 0.35(2+8)
-------
Multiply thru by 100 to get:
15*2 + 100x*8 = 35*2 + 35*8
---
30 + 800x = 70 + 280
800x = 320
x = 32/80 = 4/10 = 40%
---
Cheers,
stan H.
==============
RELATED QUESTIONS
Joe created a metal containing 40% platinum by combining two other metals. One of these... (answered by macston)

Eighteen-carat gold contains 18 parts by mass of gold to 6 parts of other metals.... (answered by ankor@dixie-net.com)

Here is my problem: Define the variables and write and solve a system of equations:... (answered by MathLover1,VFBundy)

Eighteen carat gold contains 18 parts by mass of gold to 6 parts of other metals.... (answered by josgarithmetic)

the water level was 15 milliliters before adding the chain, and 20 milliliters after... (answered by ikleyn)

A metal alloy is a metal made by blending 2 or more types of metal.A jeweler has supplies (answered by josgarithmetic)

A goldsmith has 120 grams of a gold alloy (a mixture of gold and one or more metals)... (answered by stanbon)

Please help me on this problem. I spent 3 hours on it and I still am having trouble on... (answered by ankor@dixie-net.com)

A metal alley is a metal made by blending two or more types of metal. A jeweler has... (answered by lwsshak3)