Question

How much pure alcohol should be added to 400 ml of strength 15% to make its strength 32% ? pls answer in simple way I will give 10 points
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Answer 1

Step-by-step explanation:

60+x=0.32(400+x)

⇒60+x=128+0.32x

⇒0.68x=68

⇒x=100mL

Therefore, 100 mL of alcohol should be added to make the strength 32%. This is the required answer.