Word problem ( setting up a linear equation) hard

Question

1) They sell 20 more children’s tickets than adult’s tickets to a pancake breakfast fundraiser. Children’s tickets cost $2.00 each and adults tickets cost $5.00 each. The total amount of money collected at the fund raiser was $740.00.

a) Set up a linear equation that relates children’s tickets to adult’s tickets. Use the variable A for adult’s tickets and the variable C for children’s tickets.

b) Set up a linear equation that the money that was collected from children’s tickets and from adult’s tickets. Use the variable A for adult’s tickets and the variable C for children’s tickets.

Answer 1

C=20+A

2C+5A = 740

2(20+A) + 5A = 740

40+2A + 5A = 740

7A = 700

A = 100

C = 120