Adult tickets for a play cost $9 and child tickets cost $8. If there were 23 people at a performance and the theater collected $193 from ticket sales, how many children attended the play?
A = number of adults
C = number of children
Set up two equations.
A + C = 23
9A + 8C = 193
Solve the equations simultaneously to find A and C.
14 Children attended the play
Joe Keeps only $5-bills and $20-bills in his piggy bank. If he has 216bills that worth $2865, how many $5- bills are in the bank