Answer:
310 balcony tickets were sold
Explanation:
Part 1:
X=the number of orchestra seats sold
Y=the number of balcony seats sold
980=the total of tickets sold
X+Y=980
Part 2:
Orchestra seats cost $50
Balcony Seats cost $35
Total money collected $44,350
50X+35Y=44,350
X+Y=980
Y=980-X (substitute y in your second equation)
50X+35(980-X)=44,350
50X+34,300-35X=44,350
50X-35X=44,350-34,300
15X=10,050
X=670
Y=980-X
Y=980-670
Y=310
Check
50X+35Y=44,350
50(670)+35(310)=44,350