Question

a mixture of 40 litres of milk and water contains 10% of water how much water should be added to this so that the water maybe 20% in the new mixture​

Answer 1

Answer:

40 liters of mixture contains 4 liters of water (10%). So, it has 36 liters of milk. So, the total water in the mixture should be 9 liters. Since there is already 4 liters in the mixture, 5 liters need to be added.