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An alloy of tin is 15% tin weigh 20 pounds . A second alloy is 10% tin . how much pounds of the second alloy must be added to the first to get a 12% mixture

An alloy of tin is 15% tin weigh 20 pounds . A second alloy is 10% tin . how much pounds of the second alloy must be added to the first to get a 12% mixture
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an alloy of tin is 15% tin weigh 20 pounds . A second alloy is 10% tin . how much pounds of the second alloy must be added to the first to get a 12% mixture

User Rodolfo Velasco
by
8.8k points

1 Answer

4 votes
12%=(3+10%*x)/(20+x)
x=30

add 30 pounds of the second alloy



User Waltflanagan
by
7.6k points
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