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A metal alloy weighing 5kg and containing 22% iron melted and mixed with 12 kg of a different alloy which contains 90% iron. What percent of the resulting alloy is iron?

 Mar 12, 2020
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.22 (5)  +  .90 (12)  =  x ( 5 +12)     solve for 'x' the decimal percentage of the resulting alloy

 Mar 12, 2020
edited by ElectricPavlov  Mar 12, 2020

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