Speed, Time and Distance Questions for RRB PO, Get Free PDF

RRB PO 2025 Exam is all about speed and accuracy. It is considered one of the toughest banking exams. Talking about the quantitative aptitude section, you can see 1-2 questions based on speed, time and distance. It might seem complex and tricky, but once you practice the concepts well, it can be the easiest and scoring part in the exam. In this blog, we will discuss this topic in detail to help you understand it for better performance in the exam. 

Download Speed, Time and Distance Questions for RRB PO Exam 2025

In this section, we are providing Speed, Time and Distance Questions for RRB PO Exam 2025 questions for the RRB PO Exam 2025. Our experts curate these after analysing previous years’ patterns. Download Now and practice as many questions as you can.

Speed, Distance and Time – Important Rules

Almost all the problems related to speed, distance and time contain this golden rule. It is something that you need to incorporate while solving questions. 

Common Units You’ll See

• Speed: km/hr or m/s
  
• Distance: km or m
  
• Time: hr or sec
  

Examples to understand the golden rules

In this section, we are providing examples that can help you to understand the above given golden rules in a better way.

Example 1 – Direct Question

A car travels 120 km in 3 hours. Find its speed.
Solution:
Speed = Distance ÷ Time = 120 ÷ 3 = 40 km/hr

Example 2 – Time Calculation

A train runs at 90 km/hr. How much time will it take to cover 270 km?
Solution:
Time = Distance ÷ Speed = 270 ÷ 90 = 3 hours

Example 3 – Distance Calculation

A person walks at 6 km/hr for 2.5 hours. How far does he go?
Solution:
Distance = Speed × Time = 6 × 2.5 = 15 km

How to calculate Relative Speed?

In this section, we are talking about the concept of relative speed when two objects are moving in the same or opposite direction. 

• When two objects move in the same direction,
  Relative speed = Difference of speeds.
• When they move in opposite directions,
  Relative speed = Sum of speeds.

Example:
Two trains, 50 m and 70 m long, are moving in opposite directions at 36 km/hr and 54 km/hr. Find the time they take to cross each other.

Convert to m/s:
36 km/hr = 10 m/s, 54 km/hr = 15 m/s
Total distance = 50 + 70 = 120 m
Relative speed = 10 + 15 = 25 m/s
Time = 120 ÷ 25 = 4.8 seconds

How to calculate Average Speed?

A common mistake many students make is using the simple average (S₁ + S₂)/2.
But that’s wrong unless the time taken for both speeds is the same.

The correct formula is:

(only when the same distance is covered at two different speeds)

Example:
A man travels to his office at 30 km/hr and returns at 60 km/hr.

Speed, Distance and Time calculation for Trains/Platforms

Trains often appear as a favourite subtopic.
Just remember:

• When a train passes a pole: distance = length of train.
  
• When a train passes a platform: distance = length of train + length of platform.
  
• When two trains cross: distance = sum of both train lengths.
  

Example:
A 180 m long train passes a platform in 20 seconds at a speed of 54 km/hr. Find the length of the platform.

Convert speed to m/s: 54 × 5/18 = 15 m/s
Distance = Speed × Time = 15 × 20 = 300 m
So, platform length = 300 – 180 = 120 m

Speed, Distance and Time calculation for Boats and Streams

When a boat moves:

• Downstream (with current): Effective speed = (Boat speed + Stream speed)
  
• Upstream (against current): Effective speed = (Boat speed – Stream speed)
  

Example:
A boat goes 20 km downstream in 2 hours and returns in 5 hours. Find the speed of the boat in still water and the speed of the stream.

Let boat speed = B, stream speed = S.
Downstream: 20 = (B + S) × 2 → B + S = 10
Upstream: 20 = (B – S) × 5 → B – S = 4
Solve both → B = 7 km/hr, S = 3 km/hr.

Tips to Solve Speed, Distance and Time Related Questions

• Use Ratio Method: Compare speeds and times using ratios to simplify calculations.
  Example – If the time ratio is 2:3, then the speed ratio will be 3:2, as speed and time are inversely proportional to each other.
  
• Be Comfortable with Unit Conversion: Regularly practice converting between km/hr and m/s for quick problem-solving.
  
• Write Given Data Clearly: Always list what’s provided and what’s required before solving. This avoids confusion between distance, speed, and time.
  
• Use Approximation in Mock Tests: When options differ widely, approximate smartly instead of doing lengthy calculations.
  
• Visualise the Movement: Imagine the scenario, especially in train and relative speed problems, to understand direction and distance better.
  

Common Mistakes to Avoid

• Skipping Unit Conversion: Forgetting to convert km/hr into m/s (or vice versa) leads to incorrect answers.
  
• Mixing Up Formulas: Confusing average speed with relative speed is a common error.
  
• Incorrect Train Length Addition: Always add the lengths of both trains when they cross each other.
  
• Ignoring Fraction Simplification: Simplify ratios and fractions early to save time during final steps.
  
• Relying Only on Memorisation: Focus on understanding the core relationship between speed, time, and distance instead of rote learning.
  

Conclusion

In this article, we have discussed all the important details regarding speed, distance and time. To solve questions from more such topics, you can buy our test series, where you can reattempt the full-length mock tests and get a Detailed Comparison with the Topper, compare your Time, Score, Accuracy, Correct/Wrong Answers, and even the Average Performance side-by-side. 

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