The colour cerise is made by mixing red, green and blue paint in the ratio  .

What is the volume, in litres, of green paint required if 6 litres of cerise paint is made?

Write your answer as a decimal.

Michelle makes 7.0 litres of a healthy shake to sell at her cafe.

The table below shows the mixture of ingredients that go into the shake.
 

 
How many litres of milk does Michelle need?