A pharmacist mixes 10 grams of a 15% medicine solution with 25 grams of a 10% medicine solution. 14b: How many grams is the mixture that the pharmacist has now?

14c: What concentration of medicine is in the mixture?

14d: If the pharmacist adds x grams of pure medicine to her mixture, how many grams of medicine will the mixture contain?

14e: After the pharmacist adds x grams of medicine, how many grams of the mixture does she have?

14f: Suppose we know that after she adds the x grams of pure medicine, the pharmacist's mixture is a 25% medicine solution. Write an equation.

14g: Solve the equation from part (14f) to find how many grams of pure medicine the pharmacist needs to add to achieve a 25% concentration of medicine

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