The box office at a theater is selling tickets for a series of rock concerts. So far, they have sold 86 balcony tickets and 77 general admission floor tickets for Friday's show, for a total of $5,315 in receipts. For Saturday's show, 92 balcony tickets and 77 general admission floor tickets have been sold, equaling $5,573 in receipts. How much does each ticket cost?
so just write what they have told you, using math instead of just words
86b+77g = 5315
92b+77g = 5573
subtract to get
6b = 258
Now finish it off. They made it trè̩s easy by having the same number of general seats both times.