Time, Speed & Distance
SSC GD Exam Preparation - Quantitative Aptitude
1️⃣ Introduction
This chapter is one of the most important topics in SSC MTS, SSC GD, Delhi Police, Railway & all competitive exams.
The relationship between Time, Speed, and Distance is the foundation of all problems.
2️⃣ Basic Formulae
✔ Formula 1: Speed
Speed = Distance / Time
✔ Formula 2: Distance
Distance = Speed × Time
✔ Formula 3: Time
Time = Distance / Speed
3️⃣ Unit Conversions
✔ km/hr to m/s
1 km/hr = 5/18 m/s
✔ m/s to km/hr
1 m/s = 18/5 km/hr
4️⃣ Relative Speed
✔ When moving in same direction
Relative speed = Difference of speeds
✔ When moving in opposite direction
Relative speed = Sum of speeds
5️⃣ Average Speed
Average Speed = Total Distance / Total Time
6️⃣ Key Points
If speed increases → time decreases
If speed decreases → time increases
If speed × time = constant → distance fixed
Distance fixed → speed ∝ 1/time
🧠 15 Practice Questions (With Answers)
Test your time, speed & distance concepts with these SSC GD level practice questions. Click on "View Answer" to check your understanding.
Q1. A train covers 120 km in 2 hours. What is its speed?
View Answer
Speed = 120/2 = 60 km/hr
Q2. A car moves at 80 km/hr. How much distance covered in 3 hours?
View Answer
Distance = 80 × 3 = 240 km
Q3. A man walks 20 km at 5 km/hr. Time taken?
View Answer
Time = 20/5 = 4 hours
Q4. Convert 54 km/hr to m/s.
View Answer
54 × 5/18 = 15 m/s
Q5. Convert 20 m/s to km/hr.
View Answer
20 × 18/5 = 72 km/hr
Q6. Two cars moving in same direction at 70 km/hr & 50 km/hr. Relative speed?
View Answer
= 70 − 50 = 20 km/hr
Q7. Two trains moving in opposite directions 40 km/hr & 30 km/hr. Relative speed?
View Answer
= 40 + 30 = 70 km/hr
Q8. A boy runs 10 km at 5 km/hr and returns at 10 km/hr. Avg speed?
View Answer
Total distance = 20 km, Time = 10/5 + 10/10 = 2 + 1 = 3, Avg speed = 20/3 = 6.67 km/hr
Q9. A car travels 150 km in 3 hours. Speed?
View Answer
Speed = 150/3 = 50 km/hr
Q10. Speed = 36 km/hr. Convert to m/s.
View Answer
36 × 5/18 = 10 m/s
Q11. A bus travels at 45 km/hr for 4 hours. Distance?
View Answer
= 45 × 4 = 180 km
Q12. A person walks 6 km in 1 hour. Speed?
View Answer
= 6 km/hr
Q13. A train moves at 90 km/hr. Time for 270 km?
View Answer
= 270/90 = 3 hours
Q14. Two cars opposite directions: 55 km/hr & 45 km/hr. Relative speed?
View Answer
= 55 + 45 = 100 km/hr
Q15. A cycle covers 15 km at 10 km/hr. Time?
View Answer
= 15/10 = 1.5 hours
✅ SSC GD Exam Strategy
🟢 Memorize basic speed-distance-time formulas
🟢 Practice unit conversions (km/hr ↔ m/s) quickly
🟢 Master relative speed concepts for same/opposite directions
🟢 Learn to calculate average speed for different scenarios
🟢 Time yourself - aim for 30-45 seconds per TSD question
You've completed Time, Speed & Distance Concepts!
SSC GD Tip: Time, Speed & Distance is a fundamental topic that appears in almost every competitive exam. Focus on mastering the basic formulas and unit conversions first. Remember that relative speed problems require careful attention to direction. Practice average speed calculations for different scenarios, especially when speeds vary. Regular practice with previous year SSC GD questions will build your speed and accuracy in solving TSD problems efficiently.
Master Time, Speed & Distance for SSC GD Exam!
Join Courage Library for comprehensive SSC GD study materials and expert guidance.
Start Your SSC GD Preparation!