Time, Speed & Distance · Question 29 · Hard
Time, Speed & Distance question 29
Pallavi travels half of a journey by bus at 60 km/h, a quarter by auto-rickshaw at 30 km/h and the remaining quarter on foot at 6 km/h. What is her average speed for the whole journey?
- 17 1/7 km/h
- 20 km/h
- 24 km/h
- 32 km/h
Answer and explanation
Answer: A. 17 1/7 km/h
Explanation: Take the journey as 4 units: time = 2/60 + 1/30 + 1/6 = 7/30 hour. Average speed = 4 ÷ (7/30) = 120/7 = 17 1/7 km/h.
Previous: Three runners start together from the same point on a 1,200 m circular track… · Next: Rani has to catch a train at a station 3 km from her home. She walks the first…
Practise time, speed & distance
Try a fresh set of time, speed & distance questions with an explanation after every answer, free and without signing up: Time, Speed & Distance practice. Or sit a full placement mock test.
More time, speed & distance questions
- In a 400 m race, Sita beats Gita by 40 m. Sita runs at 8 m/s. What is Gita's…
- A cyclist rides uphill at 12 km/h and downhill at 18 km/h. The road from A to…
- Three runners start together from the same point on a 1,200 m circular track…
- Rani has to catch a train at a station 3 km from her home. She walks the first…
More quantitative aptitude practice
Problems on Trains · Boats & Streams · Permutation & Combination · Probability · Data Interpretation · Mensuration · Algebra & Equations · Number System
LogicWiz Exams home · All practice topics · Placement mock tests · Daily 10 challenge