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? Let's be accurate as possible.
Adults = 9 * 11 = 99. Children = 7 * 7 = 49. Difference: 99 - 49 = $50. The adults' tickets cost $50 more than the children's tickets.
The answer: 50.