During the party Josie decides to make some more. She has 9 litres of fruit juice left and plenty of lemonade. How much extra punch can she make? To make the second batch of punch go further Josie adds 4 more litres of lemonade. What is the ratio of fruit juice to lemonade in the second batch? ​

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?