By bus = 24%.
By car = 2 × 24% = 48%.
Walk = 100% − 24% − 48% = 28%.

• Ratio (Bus : Car : Walk) = 24 : 48 : 28
• Simplify: divide all by 4.
• = 6 : 12 : 7

Final Answer: 6 : 12 : 7