SOLUTION: 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 d
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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?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
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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Equation:
alum + alum = alum
0.20x + 0.50(14-x) = 0.35*14
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20x + 50*14 - 50x = 35*14
-30x = -15*14
x = 7 lbs (amt. 20% alloy needed)
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Cheers,
Stan H.
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