SOLUTION: 10k gold ----------- ----42%
14k gold ----------- ----58%
18k gold ----------- ----75%
22k gold ----------- ----92%
24k gold ----------- ----100%
How many grams of 22k gold
Algebra.Com
Question 199624: 10k gold ----------------42%
14k gold ----------------58%
18k gold ----------------75%
22k gold ----------------92%
24k gold ----------------100%
How many grams of 22k gold must be mixed with 5 grams of 14k gold to produce 18k gold?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
10k gold ----------------42%
14k gold ----------------58%
18k gold ----------------75%
22k gold ----------------92%
24k gold ----------------100%
How many grams of 22k gold must be mixed with 5 grams of 14k gold to produce 18k gold?
:
translate k to decimal equiv of per cent.
:
Let x = amt of 92% (22k) required
:
.92x + .58(5) = .75(x+5)
:
.92x + 2.9 = .75x + 3.75
:
.92x - .75x = 3.75 - 2.9
:
.17x = .85
x =
x = 5 grams of 22k required
RELATED QUESTIONS
how much pure gold (24k) must be mixed with 60% gold to get 20 grams of 75%... (answered by mananth)
How many grams of 14k gold can be produced from 9 grams of 24k... (answered by richwmiller)
How many grams of 24k gold do I need to melt with 10 grams of 10k gold to make 14k... (answered by checkley79)
How many grams of pure gold must be mixed with 40% gold alloy to produce 100 grams of 52% (answered by josmiceli)
How much pure gold (24K) must be mixed with 70% gold to get 30 grams (g) of 80% gold?... (answered by josgarithmetic,MathTherapy)
One hundred percent pure gold is 24-karat gold, which is too soft to be made into... (answered by josmiceli)
How much pure gold should be mixed with 12 karat gold to obtain 72 grams of 18 karat... (answered by Alan3354)
One hundred pure gold is 24-karat gold, which is to soft to be made into jewelry. Most... (answered by josgarithmetic)
The purity of gold is measured in karats, with pure gold being 24 karats. Other purities... (answered by timofer)