Total items = 440. Fresh : Frozen = 7 : 4.

[[model:questions/solutions/q10506.png]]

Total units = 7 + 4 = 11 units
• 11 units → 440
• 1 unit → 440 ÷ 11 = 40
• Fresh = 7 units = 7 × 40 = 280
• Frozen = 4 units = 4 × 40 = 160

Now find local vs imported in each group:
Fresh — local : imported = 5 : 2
• Local fresh = \( \frac{5}{7} \) × 280 = 200
• Imported fresh = \( \frac{2}{7} \) × 280 = 80
Frozen — local : imported = 1 : 7
• Local frozen = \( \frac{1}{8} \) × 160 = 20
• Imported frozen = \( \frac{7}{8} \) × 160 = 140

Total local = 200 + 20 = 220
Total imported = 80 + 140 = 220
Ratio of all local to all imported = 220 : 220 = 1 : 1
Check: 220 + 220 = 440. ✓

Final Answer: 1 : 1