SOLUTION: An alloy of metals is 25% copper. Another alloy is 50% copper. How much of each should be used to make 1000 grams of an alloy that is 45% copper?

Question 801158: An alloy of metals is 25% copper. Another alloy is 50% copper. How much of each should be used to make 1000 grams of an alloy that is 45% copper?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
An alloy of metals is 25% copper. Another alloy is 50% copper. How much of each should be used to make 1000 grams of an alloy that is 45% copper?
-------
Equation:
copper + copper = copper
0.25x + 0.50(1000-x) = 0.45*1000
-----
25x + 50*1000 - 50x = 45*1000
-25x = -5*1000
x = (1/5)(1000)
x = 200 grams (amt. of 25% alloy needed)
----
1000-x = 800 grams (amt. of 50% alloy needed)
===============
Cheers,
Stan H.
===============
RELATED QUESTIONS
Please help me solve this problem. An alloy of metals is 25% copper. ANother alloy is (answered by midwood_trail)

an alloy of metals is 25% copper. Another alloy is 50% copper. How much of each alloy... (answered by Alan3354)

An alloy of metals is 25% copper. Another alloy is 50% copper. How much of each alloy... (answered by stanbon)

An alloy of metals is 25% copper. Another alloy is 50% copper. How much of each alloy... (answered by josmiceli)

an alloy of metals is 25% copper. another alloy is 50% copper. how much of each should be (answered by josmiceli)

An alloy of metals is 25% copper another alloy is 50% copper. How much of each alloy is... (answered by ankor@dixie-net.com)

An alloy of metals is 25% copper. Anotheralloy is 50% copper. How much of each should be... (answered by macston)

The problem is: An alloy of metals is 25% copper. Another alloy is 50% copper. How much... (answered by ankor@dixie-net.com)

an alloy of metals is 20% copper. another alloy is 50% copper.how much of each should be... (answered by checkley71,k.boy)