Rick has 10 kids to babysit. If he gives each kid goldfish, He will have given out a total of 100 goldfish. How much goldfish did each kid get?

How do I convert this to an algebraic expression?

How do you solve a question like this?

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

7+(3n++8) what is the answer to this?