A metallurgist has an alloy with 15​% titanium and an alloy with 30​% titanium. He needs 100 grams of an alloy with 21​% titanium. How much of each alloy should be mixed to attain the 100 grams of alloy with 21​% ​titanium?

Respuesta :

He needs 100g of the 21% alloy, and 0g of the 15% alloy to attain the 100g of 21% titanium.