<PRE><B>Question 817030</B>
A metal alloy weighing 6 lb. and containing 4%
iron is melted and mixed with 2 lb. of pure iron. 
What percent of the resulting alloy is iron?
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iron + iron = iron
0.04*6 + 1*2 = x(6+2)
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Multiply thru by 100 to get:
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4*6 + 200 = x(800)
800x = 224
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Ans:: x = 0.28 - 28%
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Cheers,
Stan H.</PRE>