Time, Speed & Distance · Question 23 · Medium
Ravi travels 25 km in 3 hours, walking part of the way at 5 km/h and cycling the rest at 15 km/h. How many kilometres did he walk?
- 15 km
- 10 km
- 5 km
- 12 km
Answer and explanation
Answer: B. 10 km
Explanation: If he walked w km: w/5 + (25 − w)/15 = 3. Multiplying by 15: 3w + 25 − w = 45, so w = 10 km.
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