Question

how much pure alcohol is to be added to 400ml of a 15% solution to make its strength 32%​

Answer 1

Step-by-step explanation:

Since we have given that

Quantity of solution = 400 ml

Let quantity of pure alcohol be 'x'.

According to question,

So, we will solve it for the value of 'x':

Hence, 100 ml of pure alcohol must be added to 400 ml of a 15% solution

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Answer 2

Step-by-step explanation:

Let x ml of pure alcohol is to be added. Answer: 100 ml of pure alcohol must be added to 400 ml of a 15% solution.