Answer:
170=1/5(450 + b) balcony seats = 80
Step-by-step explanation:
170= 1/5(450 + b)
170= 450/5 + 1/5b
170= 90 + 1/5 b
170-90=1/5 b
80=1/5b
80 x 5=b
400=total balcony seats
1/5(400)= 80 tickets sold are balcony seats
