How many kilograms of brass containing $58 \%$ copper must be melted with $1 \overline{0} 0 \mathrm{~kg}$ of brass containing $75 \%$ copper to produce a new brass containing $70 \%$ copper?

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The Answer of How many kilograms of brass containing $58 \%$ copper must be melted with $1 \overline{0} 0 \mathrm{~kg}$ of brass containing $75 \%$ copper to produce a new brass containing $70 \%$ copper?

How Many Kilograms of Brass Containing 58%58 \%58% Copper Must Be Melted With

How Many Kilograms of Brass Containing $58 \%$ Copper Must Be Melted With