Wednesday

August 20, 2014

August 20, 2014

Posted by **jay** on Monday, July 5, 2010 at 11:59pm.

- math -
**Reiny**, Tuesday, July 6, 2010 at 12:18amNumber of kg of 45% alum .... x

number of kg of 70% alum .... 20-x

solve for x

.45x + .70(20-x) = .60(20)

(I suggest multiplying each of the 3 term by 100 first)

**Related Questions**

Chemistry - A homogenous mixture of metals is called an alloy. An alloy is found...

Chemistry - Thank you so much for the help on my other question!!! An alloy (...

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

math please help!! - Solve the problem. Anne and Nancy use a metal alloy that is...

College Pre Calculus - anne and nancy use a metal alloy that is 19.3% copper to ...

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

Algebra/Math - Can you show work por favor? :) A metalworker has a metal alloy ...

Chemistry - A 0.250g smaple of magnesium-aluminum alloy dissolves completely in ...

Chemistry - A 0.250-g sample of a magnesium-aluminum alloy dissolves completely ...

Chemistry - A mettallurgist decided to make a special alloy. He melted 30 grams ...