Question

17. If 30 litres of 20% milk is mixed with 20 litres of 25%
milk, then find the concentration of milk in the
resulting solution.
(1) 21% (2) 22% (3) 23%
(4) 24%​

Answer 1

Answer:

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Step-by-step explanation:

Original mixture volume = 60L

Original milk content = 42L

Milk added = 30L

New Total volume of solution = 90L

New milk content = 42 + 30 = 72L

Or 72/90 x 100 = 80%

New Water content = 18/90 x 100 = 20%