SOLUTION: A silversmith mixed 35 g of an 80% silver alloy with 40 g of a 25% silver alloy. What is the percent concentration of the resulting alloy? (Round your answer to one decimal place.)

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Question 993223: A silversmith mixed 35 g of an 80% silver alloy with 40 g of a 25% silver alloy. What is the percent concentration of the resulting alloy? (Round your answer to one decimal place.)

Found 2 solutions by stanbon, addingup:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
A silversmith mixed 35 g of an 80% silver alloy with 40 g of a 25% silver alloy. What is the percent concentration of the resulting alloy? (Round your answer to one decimal place.)
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Equation:
silver + silver = silver
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0.80*35 + 0.25*40 = x(75)
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80*35 + 25*40 = 7500x
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x = 0.5067
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Cheers,
Stan H.
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Answer by addingup(3677) About Me  (Show Source):
You can put this solution on YOUR website!
35+40= 75 Total of all silver alloy
35/75= 46.7% of the total silver alloy is 80% silver alloy
40/75= 53.3% of the total silver alloy is 25% silver alloy
(0.467 x 0.8)+(0.533 x 0.25)= 0.374+0.133= 0.507= 50.7% is the percentage concentration of the resulting alloy.