I need help with an algebra problem

Dec 7th, 2015
Price: $5 USD

Question description

A metal worker has ingots of a metal alloy. Some of the ingots are 25% copper by weight and some of the ingots are 50% copper by weight. How many kilograms of each type of ingot should the metalworker melt and combine to create 40 kilograms of a 45% copper alloy?

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(Top Tutor) partha
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