document.write( "Question 754775: An aluminum alloy containing 35% aluminum is to be made by combining 20% and 50% alloys. How many pounds of the 50% alloy must be added to 14 lbs. of the 20% alloy to produce the desired aluminum alloy? \n" ); document.write( "
Algebra.Com's Answer #459297 by stanbon(75887)\"\" \"About 
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An aluminum alloy containing 35% aluminum is to be made by combining 20% and 50% alloys. How many pounds of the 50% alloy must be added to 14 lbs. of the 20% alloy to produce the desired aluminum alloy?
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\n" ); document.write( "Equation:
\n" ); document.write( "alum + alum = alum
\n" ); document.write( "0.20x + 0.50(14-x) = 0.35*14
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\n" ); document.write( "20x + 50*14 - 50x = 35*14
\n" ); document.write( "-30x = -15*14
\n" ); document.write( "x = 7 lbs (amt. 20% alloy needed)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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