Mr.Williams is buying tickets for the school musical.Adult tickets cost $3.00 more than student tickets.He buys 7 student tickets and 6 adult tickets,and spends a total of $83.00.What is the price of one adult ticket?
Let price of an adult's ticket be A
Then price of a student's ticket is: A - 3
We then get: 6A + 7(A - 3) = 83
6A + 7A - 21 = 83
13A = 104
A, or cost of an adult's ticket =