Question : A mixture contains milk and water in a ratio of 9 : 5. When 6 litres of water is added to this mixture, the ratio of milk and water becomes 9 : 7. Find the quantity of milk in the mixture.

Option 1: 30 litres

Option 2: 18 litres

Option 3: 27 litres

Option 4: 15 litres

Question : A bottle holds 8 litres of a mixture of milk and water in a ratio of 3 : 1. 3 litres of water is added to the given mixture. Find the new ratio of milk and water in the mixture.

Option 1: 3 : 2

Option 2: 1 : 3

Option 3: 2 : 3

Option 4: 6 : 5

Question : 470 litres of a mixture of milk and water contains 5% of water. A mischievous boy added some water in the mixture and now there is 6% water in the new mixture. Find the quantity of water added by the boy in the mixture.

Option 1: 6 litres

Option 2: 8 litres

Option 3: 5 litres

Option 4: 10 litres

Question : The alcohol and water in a mixture are in the ratio of 4 : 5 respectively. 20-litres water is added to it. If the ratio of alcohol and water in the new mixture is 1 : 3 respectively, then what is the total quantity of the alcohol in the new mixture?

Option 1: $\frac{80}{7}$ liters

Option 2: $15$ liters

Option 3: $\frac{60}{7}$ liters

Option 4: $\frac{90}{11}$ liters

Question : Two vessels A and B contain milk and water mixed in the ratios 4 : 3 and 2 : 3. The ratio in which these mixtures need to be mixed to form a new mixture containing half milk and half water is:

Option 1: 7 : 5

Option 2: 6 : 5

Option 3: 5 : 6

Option 4: 4 : 3