Question: A chemist mixes 10 liters of a 20% solution with x liters of a 35% solution. Which of the following expressions represents the total number

A chemist mixes 10 liters of a 20% solution with x liters of a 35% solution. Which of the following expressions represents the total number of liters in the mixture?

(a) x

(b) 20 - x

(d) 10 + x

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