Question

A mixture of 40 liters of milk and water contains 10% water. how much water must be added to make 20% in the new mixture?
a) 10 liter b) 7 liter
c) 5 liter d) 3 liter

Answer 1

The answer is not on the options.

It should be done like this...

10% of 40 litres = 4 liters

20% of 40 litres = 8 liters

8 litres - 4 litres = 4 liters

4 litres is not an option


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