SOLUTION: ) Sally needs 10 lb of metal with 33 % silver. If Sally combines
one metal with 18 % silver, and another with 73
% silver, how much of each metal does Sally need?
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-> SOLUTION: ) Sally needs 10 lb of metal with 33 % silver. If Sally combines
one metal with 18 % silver, and another with 73
% silver, how much of each metal does Sally need?
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Question 1126661: ) Sally needs 10 lb of metal with 33 % silver. If Sally combines
one metal with 18 % silver, and another with 73
% silver, how much of each metal does Sally need?
You can put this solution on YOUR website! Let = pounds of 18% silver needed
Let = pounds of 73% silver needed
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(1)
(2)
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(2)
(2)
Multiply both sides of (1) by
and subtract (1) from (2)
(2)
(1)
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and
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7.273 pounds of 18% silver
2.727 pounds of 73% silver
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check:
(2)
(2)
(2)
(2)
error due to rounding off
