You are decorating your bedroom. to get the paint colour you want, you mix 2 parts red with 3 parts cream and 1 part blue. how much cream and blue paint will you need to mix with 4 litres of red? 4 litres red:

If you need 2 parts red, 3 parts cream, and 1 part blue for the certain you want, and you have 4 liters of red then multiply all the numbers by two

For red: 2 parts × 2 = 4 litres

For cream: 3 parts × 2 = 6 litres

For blue: 1 part x 2 = 2 litres

You would need 6 litres of cream, and 2 litres of blue for the 4 litres you already have