Average Speed – Verified PYQ Authority Guide
Average Speed is a sub-topic revision hub built around verified PYQ evidence. It connects the recurring question patterns inside this sub-topic with the formulas, exam tips, common traps and concept pages already present in SRO. Every factual learning cue below is drawn from the existing verified, published and approved English PYQ corpus or from its Knowledge Graph relationships; the hub does not invent unsupported technical claims.
PYQ evidence snapshot
17 verified PYQs are currently mapped to this Sub Topic hub. The represented years include 2025. Exam coverage currently includes RRB NTPC Under Graduate Level. Subject context includes Quantitative Aptitude. These values come from live mappings and can expand automatically when new verified PYQs are added.
Most useful verified PYQs to solve first
Start with the actual questions rather than memorising a generic note. The links below are ranked from the mapped corpus using repeat history and editorial quality, while the complete explanation stays on the individual question page.
- A train runs at 72 km/h for 3 hours and then at 60 km/h for 1.5 hours. What is the average speed of the train?
RRB NTPC Under Graduate Level · 2025 · Average Speed for Unequal Time Intervals
Total distance = 72×3 + 60×1.5 = 216 + 90 = 306 km. Total time = 4.5 h. Average speed = 306/4.5 = 68… - A car travels 120 km at 40 km/h, 120 km at 60 km/h, and 100 km at 80 km/h. What is the average speed of the car for the whole journey?
RRB NTPC Under Graduate Level · 2025
Use the standard Average Speed method and simplify; the result matches 54.4 km/h. - A bus travels 90 km at 45 km/h, 120 km at 60 km/h, and 150 km at 75 km/h. What is the average speed of the bus for the entire journey?
RRB NTPC Under Graduate Level · 2025
Use the standard Average Speed method and simplify; the result matches 60 km/h. - A car travels 120 km at 40 km/h, 180 km at 60 km/h, and 100 km at 50 km/h. What is the average speed of the car for the entire journey?
RRB NTPC Under Graduate Level · 2025
Use the standard Average Speed method and simplify; the result matches 50 km/h. - A cyclist travels from point A to B and back from B to A along the same route. On the onward journey, he covers one-third of the distance at 12 km/hr and…
RRB NTPC Under Graduate Level · 2025
Use the standard Average Speed method and simplify; the result matches 13.5 km/hr. - A car travels the first 60 km at 45 km/hr and the next 90 km at 60 km/hr. What is the average speed for the entire journey? (Round off your answer to…
RRB NTPC Under Graduate Level · 2025
Use the standard Average Speed method and simplify; the result matches 52.94 km/hr. - Raghav drives from City A to City B in three equal segments of 40 km each. He drives the first segment at 40 km/hr, the second at 60 km/hr, and the third…
RRB NTPC Under Graduate Level · 2025
Use the standard Average Speed method and simplify; the result matches 60 km/hr. - A scooter travels 40 km at 20 km/hr and returns 60 km at the same speed. What is the average speed?
RRB NTPC Under Graduate Level · 2025
Use the standard Average Speed method and simplify; the result matches 20 km/hr.
Formula & key-relationship bank from verified solutions
Average Speed = Total Distance / Total Time
Use these as revision triggers and open the linked PYQ before applying a formula numerically; variable definitions and assumptions belong to the exact solved question.
Core ideas repeatedly reinforced by the solved corpus
- Total distance = 72×3 + 60×1.5 = 216 + 90 = 306 km. Total time = 4.5 h. Average speed = 306/4.5 = 68 km/h.
- Use the standard Average Speed method and simplify; the result matches 54.4 km/h.
- Use the standard Average Speed method and simplify; the result matches 60 km/h.
- Use the standard Average Speed method and simplify; the result matches 50 km/h.
- Use the standard Average Speed method and simplify; the result matches 13.5 km/hr.
Exam tips already validated in SRO solutions
- Use total distance ÷ total time unless a special equal-distance shortcut is clearly applicable.
- Identify the Average Speed relationship before calculation and keep units/bases consistent.
Common mistakes to avoid
- Taking (72 + 60)/2 = 66 km/h even though the train spends different amounts of time at the two speeds.
- Using a shortcut without checking its conditions or using the wrong base/unit.
Topic and concept coverage
Mapped topic labels include Speed, Time and Distance, Speed Time and Distance. The concept trail includes Average Speed, Average Speed for Unequal Time Intervals. Use these labels as a revision map: move from the broad area to the narrow concept, solve a verified PYQ, inspect the detailed reasoning, and then attempt another question from the same cluster.
Knowledge Graph navigation
Continue with Speed, Time and Distance, Average Speed, Average Speed for Unequal Time Intervals, Arithmetic, Quantitative Aptitude. These are canonical SRO entity links based on the Knowledge Graph and shared question mappings, not keyword-stuffed tag pages.
How to revise this authority page efficiently
- Solve before reading: answer a mapped PYQ first.
- Read the exact explanation: verify the correct principle, formula, distractor logic and common mistake on that question page.
- Move one level in the graph: use the closest concept/sub-topic/topic link rather than opening unrelated content.
- Reattempt: solve another verified PYQ from this hub and check whether the same error repeats.
Quality scope: this page is automatically maintained from SRO’s verified mapped corpus. It enriches one canonical authority URL instead of generating multiple near-duplicate pages for keyword variants. Manual authority articles are never overwritten by the automated engine.