There are 9 students in a class: 2 boys and 7 girls.
If the teacher picks a group of 4 at random, what is the probability that everyone in the group is a girl?

3women sell hats at a craft fair weekly. the money they make at the fair is split into categories. 9% goes to pay taxes. $55 goes to pay rent for the space they sell in. the rest is split between the women. if the group make $706 at the fair, how much does each women get paid once the money is divided