Use the top-level ratio 5:1 to find how many local and foreign there are, then break each group down using sub-ratios.
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• Top-level ratio 5:1 means 6 units in total.
• 60 ÷ 6 = 10 per unit.
• Local: 5 × 10 = 50
• Foreign: 1 × 10 = 10
For the local (sub-ratio 3 + 2):
• 5 parts = 10 per part
• take the bus: 3 × 10 = 30
• walk: 2 × 10 = 20
For the foreign (sub-ratio 1 + 1):
• 2 parts = 5 per part
• take the bus: 1 × 5 = 5
• walk: 1 × 5 = 5
Total take the bus: 30 + 5 = 35.
Check: 50 + 10 = 60 = total (60). ✓
Final Answer: 35