A mixture of water and milk contains `80%` milk, in 50 litres of such a mixture, how many litres of water isrequired to increase the percentage of water to `50%` ? (a) 45 litre (b) 30 litre (c) 20 litre (d) 15 litre `

A mixture of water and milk contains 80% milk. In 50 litres of such a mixture, how many litres of water is required to increase the percentage of water to, 50%?

A mixture of water and milk contains 80% milk. In 50 litre of such a mixture, how many litres of water is required to increase the percentage of water to, 50% ?

In a 25 litre mixture of milk and water, the water is only 20%. How many litres of water is required to increase the percentage of water to 90%?

In a 25 litre mixture of milk and water, the water is only 20%. How many litres of water is required to increase the percentage of water to 90%?

2/3 of a milk-water mixture was milk. There was 21 litres of the mixture. If 4 litres of water is added to it, the percentage of milk in the new mixture will be:

A mixture of alcohol and water contains 7% alcohol. How much mixture (in litres) is required to get 357 litres of alcohol?

In a 50 litre mixture of water and milk, water is only 20%. The milkman gives 10 litre of this mixture to a customer and then he adds up 10 litres of pure water in the remaining mixture. The percentage of water in the final mixture is :

15 litres of mixture contains 20% alcohol and the rest of water. If 3 litres of water be mixed with it, the percentage of alcohol in the new mixture would be :

20 litres of a mixture contains milk and water in the ratio 3:1. Then the amount of milk to be added to the mixture so as to have milk and water in ratio 4:1 is (a) 7 litres (b) 4 litres (c) 5 litres (d) 6 litres