SOLUTION: A silversmith mixes 60g of alloy that is 50% silver with 200g of another silver alloy. the resulting alloy is 65% silver. find the percent of silver in the 200g of alloy.

Question 446217: A silversmith mixes 60g of alloy that is 50% silver with 200g of another silver alloy. the resulting alloy is 65% silver. find the percent of silver in the 200g of alloy.
Found 2 solutions by rwm, stanbon:
Answer by rwm(914) (Show Source): You can put this solution on YOUR website!
.5*60+200x=260*.65
x=.695 or 69.5%

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A silversmith mixes 60g of alloy that is 50% silver with 200g of another silver alloy. the resulting alloy is 65% silver. find the percent of silver in the 200g of alloy.
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Equation:
silver + silver = silver
0.50*60 + r*200 = 0.65*(60+200)
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Multiply thru by 100 to get:
50*60 + 200r = 65*60 + 65*200
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(r-65)200 = 15*60
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r-65 = 4.5
r = 69.5% (% of silver in the 200g of alloy)
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Cheers,
Stan H.
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