Wednesday

November 26, 2014

November 26, 2014

Posted by **Anon** on Wednesday, February 27, 2013 at 8:48pm.

A metalworker has a metal alloy that is 20% copper and another alloy that is 60% copper. How many kilograms of each alloy should be combined to create 80 kg of a 53% copper alloy?

- Algebra/Math -
**Sarah**, Wednesday, February 27, 2013 at 9:39pmOk, so you have x as the kg.

The equation should look like this:

.20(x) + .60(80-x) = .53(80)

Then you can multiply everything out to solve for x.

- Algebra/Math -
**Karen**, Wednesday, February 27, 2013 at 11:56pmWhat is the factor (x to the third power + 4x to the second power)(2x+8)?

**Answer this Question**

**Related Questions**

Algebra - solve linear equation-an alloy of metal is 25% copper. Another alloy ...

math - An alloy of metals is 25% copper. Another alloy is 50% copper. How much ...

8th grade - An alloy of metals is 25% copper .Another alloy is 50% copper. How ...

math - An alloy of copper is 10% copper and weighs 25 pounds. A second alloy is ...

Algebra - How much 20% and 40% copper alloy should be mixed to yield 500 ...

algebra - How many ounces of a 19% copper alloy metal must be added to 42% ...

Geometry - An alloy of copper is 10% copper and weighs 25 pounds. A second alloy...

math - an alloy of metals is 20% copper. another alloy is 50% copper.how much of...

algebra - Solve the problem. Anne and Nancy use a metal alloy that is 24.9% ...

math - Anne and Nancy use a metal alloy that is 23.5% copper to make jewelry. ...