Quantitative Aptitude – Time, Speed & Distance
Time, Speed and Distance is a fundamental topic in bank exams. Many questions are direct formula-based, making it a scoring area if concepts are clear and formulas are applied correctly.
Basic Formula
Speed = Distance / Time
- Distance = Speed × Time
- Time = Distance / Speed
Important Concepts
- Speed Unit Conversion:
1 m/s = 3.6 km/h
1 km/h = 5/18 m/s - Relative Speed:
Same direction → Subtract speeds
Opposite direction → Add speeds - Average Speed:
Average Speed = Total Distance / Total Time
Shortcut Tricks
1. Same Distance Formula
Average Speed = (2 × x × y) / (x + y)
2. Train Crossing Concept
- Time = Total Length / Speed
- Total Length = Train + Platform
3. Relative Speed Trick
If two objects move in opposite direction: Relative speed = Sum of speeds
Practice Questions
Q1. A car travels 60 km in 2 hours. Find speed
Answer: 30 km/h
Q2. A train 100 m long crosses a pole in 10 sec. Find speed
Answer: 10 m/s
Q3. Two trains moving in opposite direction at 50 km/h and 70 km/h. Find relative speed
Answer: 120 km/h
Q4. A man travels 40 km at 20 km/h and returns at 40 km/h. Find average speed
Answer: 26.67 km/h
Speed Strategy
- Memorize basic formulas
- Convert units carefully
- Use relative speed in train problems
- Avoid unnecessary calculations
Practice Task
1. Convert 72 km/h into m/s
2. A car travels 150 km in 3 hours. Find speed
3. Two persons move at 5 km/h and 7 km/h opposite direction. Find relative speed
No comments:
Post a Comment