Question 264073
8F+6B=516
F+B=72 OR F=72-B
8(72-B)+6B=516
576-8B+6B=516
-2B=516-576
-2B=-60
B=-60/-2
B=30 BALCONY SEATS WERE SOLD.
F=72-30
F=42 FLOOR TICKETS WERE SOLD.
PROOF:
8*42+6*30=516
336+180=516
516=516