Nine adults went to a play with seven children. Adult tickets are $11 each and children's tickets are $7 each. How many dollars more did the adults' tickets cost in total than the children's tickets in total?
Adults = 9 * 11 = <T>multiply(9, 11)=99
Children = 7 * 7 = <T>multiply(7, 7)=49
Difference: 99 - 49 = $<T>subtract(99, 49)=50
The adults' tickets cost $50 more than the children's tickets.
