Question

How many litres of pure alcohol are there in 8 litres of a 75% solution.​

Answer 1

Answer:

30% of 80ltr = 24

70% of 80ltr = 56

Let amount of acid added to the entire mixture be x

Therefore: total mixture = 80+x

Amount of acid in mixture = 24 + x

Amount of water in mixture = 56 + x

Now,

24+x = 65%(80+x)

Solving the equation you get

x = 80

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