Question

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4. Five litres of water is added to a certain quantity of pure milk costing 60 per litre. If
by
selling the mixture at the same price as before, a profit of 20% is made, what is the amouni
of pure milk in the mixture?​

Answer 1

Answer:

A profit of 20% is made and since the selling price is the same there must be 20% more liquid. Thus the extra 20% liquid refers to the added 5 L of water. Now we know that 20% of the milk = 5L, so 100% of the milk = 25 L.