# How Much Compound to be Added, So That A Become 20%?

40 litres of a compound contains 10% of a chemical A. The amount of A to be added to the compound so that the percentage of A in the new compound is 20%, is

- 5 litres
- 8 litres
- 18 litres
- 2 litres

40 litres of a compound contains 10% of a chemical A. The amount of A to be added to the compound so that the percentage of A in the new compound is 20%, is

- 5 litres
- 8 litres
- 18 litres
- 2 litres