Use the top-level ratio 1:9 to find how many VIP and regular there are, then break each group down using sub-ratios.
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• Top-level ratio 1:9 means 10 units in total.
• 500 ÷ 10 = 50 per unit.
• VIP: 1 × 50 = 50
• Regular: 9 × 50 = 450
For the VIP (sub-ratio 7 + 3):
• 10 parts = 5 per part
• early birds: 7 × 5 = 35
• walk-ins: 3 × 5 = 15
For the regular (sub-ratio 2 + 3):
• 5 parts = 90 per part
• early birds: 2 × 90 = 180
• walk-ins: 3 × 90 = 270
Total walk-ins: 15 + 270 = 285.
Check: 50 + 450 = 500 = total (500). ✓
Final Answer: 285