Ametal worker has a metal alloy that is 30% copper and another alloy that is 55% copper. how many kilograms of each alloy should the metalworker combine to create 120 kg of a 45% copper alloy?

The metalworker should combine 48 kg of 30% copper alloy and 72 kg of 55% copper alloy to make 120 kg of 45 5 copper alloy

Solution:

Let "x" be the amount of 30% copper alloy used in the mix

Then 120 - x will be the amount of 55% copper alloy used in mix

The total amount of copper in the mix is then,

Thus 48 kg of 30% copper alloy used in the mix

Then (120 - x) = 120 - 48 = 72

Thus 72 kg of 55% copper alloy used in mix

Thus the metalworker should combine 48 kg of 30% copper alloy and 72 kg of 55% copper alloy to make 120 kg of 45 5 copper alloy

#15. square

step-by-step explanation:

because quadrilatural (idk how to spell it) means somthing that is not 3d or like, equal sides (or somthing like that   you know what i meanz)

hope this halps!

bai!

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step-by-step explanation:

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