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#30586

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equations

medium

90 sec

A nutritionist is preparing a protein mix using two types of protein powder. Powder A contains 80% protein by weight, and Powder B contains 50% protein by weight. The nutritionist uses $x$ grams of Powder A and $y$ grams of Powder B. The total amount of protein in the mix is 450 grams. If the nutritionist uses 300 grams of Powder A, how many grams of Powder B did they use?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.