Bank Exam Speed, Time & Distance – Page 8 (Premium Guide)
Relative Speed • Trains • Boats & Streams • Shortcut Techniques
Core Formulas
Speed = Distance / Time
Distance = Speed × Time
Time = Distance / Speed
Unit Conversion
1 km/hr = 5/18 m/s
1 m/s = 18/5 km/hr
Basic Practice
Q1. 60 km in 2 hours
Speed = 30 km/hr
Q2. 120 km in 3 hours
= 40 km/hr
Q3. Speed = 80 km/hr, Time = 3 hrs
Distance = 240 km
Relative Speed
Q4. Opposite direction (40, 60)
= 100 km/hr
Q5. Same direction (60, 40)
= 20 km/hr
Train Problems
Crossing pole: Length / Speed
Crossing platform: (Train + Platform) / Speed
Q6. Train length 100m, speed 10 m/s
Time = 10 sec
Q7. Train 120m, platform 80m
Total = 200m
Time = 20 sec
Boats & Streams
Downstream = u + v
Upstream = u − v
Q8. Downstream = 20, Upstream = 10
Still water = 15
Stream = 5
Q9. Downstream = 30, Upstream = 20
Still water = 25
Stream = 5
Average Speed
Equal distance: 2xy / (x + y)
Equal time: (x + y) / 2
Q10. Speeds 60 and 40 (equal distance)
= 48 km/hr
Topper Tips
- Use relative speed for trains
- Memorize unit conversions
- Apply average speed shortcuts
- Convert units quickly
Exam Strategy
- Attempt direct formula questions first
- Skip lengthy calculations initially
- Use approximation where possible
Final Tip
Understand Concept → Apply Formula → Solve Fast
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