Answer:
The Answer is there were: 180 Orchestra Tickets; 170 Box Seat Tickets; and 10 Balcony seats.
Explanation:
10o + 7b + 5y = $3,040
o + b + y = 360
b + y = o
b = o - y
Substitute:
(b + y) + b + y = 360
2b + 2y = 360
2y = 360 - 2b
y = 180 - b
y - 180 = -b
-b = y - 180
b = 180 - y
10(b + y) + 7(b) + 5(180 - b) = 3040
10(b + (180 - b)) + 7b + 5(180 - b) = 3040
10b + 1800 - 10b + 7b + 900 - 5b = 3040
2b + 2700 = 3040
2b = 340
b = 170
y = 180 - 170 = 10
b + y = o
o = 170 + 10 = 180
Proof total tickets:
o + b + y = 360
180 + 170 + 10 = 360
Proof Amount:
10o + 7b + 5y = $3,040
10(180) + 7(170) + 5(10) =
1800 + 1190 + 50 = $3,040