Hey can someone please help me with these 3 questions???

Bruce is getting materials for a chemistry experiment his teacher gives him a container that has 0.25 liter of liquid in it. bruce need to use 0.4 of this liquid for the experiment. how much liquid will bruce use?

In a school 2/3 of the students study a language of those who study a language 2/5 study french

1foot = 12 inches; 1 yard = 3 feet