Question: Solve Exercise 26 if a 25% solution of the same mixture is added instead of pure alcohol. Exercise 26 Five grams of a chemical are

Solve Exercise 26 if a 25% solution of the same mixture is added instead of pure alcohol.

Exercise 26

Five grams of a chemical are dissolved in 100 liters of alcohol. Pure alcohol is added at the rate of 2 liters per minute and at the same time the solution is being drained at the rate of 1 liter per minute.
(a) Find an expression for the amount of the chemical in the mixture at any time.
(b) How much of the chemical is present after 30 minutes?

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