SOLUTION: How many pounds is an alloy containing 20% of silver must be melted with 30 pounds of an alloy containing 35% silver to obtain an alloy containing 30% silver?
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Question 655084: How many pounds is an alloy containing 20% of silver must be melted with 30 pounds of an alloy containing 35% silver to obtain an alloy containing 30% silver?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
How many pounds is an alloy containing 20% of silver must be melted with 30 pounds of an alloy containing 35% silver to obtain an alloy containing 30% silver?
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let x=lbs of 20% alloy to be melted
x+30=lbs of mixed 30% alloy
..
20%x+35%*30=30%(x+30)
.2x+10.5=.3x+9
.1x=1.5
x=15
lbs of 20% alloy to be melted=15
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