Use the top-level ratio 5:7 to find how many vases and bowls there are, then break each group down using sub-ratios.
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• Top-level ratio 5:7 means 12 units in total.
• 84 ÷ 12 = 7 per unit.
• Vases: 5 × 7 = 35
• Bowls: 7 × 7 = 49
For the vases (sub-ratio 3 + 2):
• 5 parts = 7 per part
• glazed: 3 × 7 = 21
• unglazed: 2 × 7 = 14
For the bowls (sub-ratio 4 + 3):
• 7 parts = 7 per part
• glazed: 4 × 7 = 28
• unglazed: 3 × 7 = 21
Total glazed: 21 + 28 = 49.
Check: 35 + 49 = 84 = total (84). ✓
Final Answer: 49