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30 Time-Speed-Distance Questions and Answers

30 solved Time-Speed-Distance questions with step-by-step explanations. Includes formulas, shortcuts, and tips for placement tests and competitive exams.

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Advanced time-speed-distance questions for experienced learners. These medium-to-hard questions test deeper understanding and are ideal for those who have already mastered the basics. Each question includes a detailed explanation.

Key Formulas

Speed = Distance / Time, Distance = Speed × Time, Time = Distance / Speed km/hr to m/s: multiply by 5/18. m/s to km/hr: multiply by 18/5 Avg Speed = Total Distance / Total Time (NOT average of speeds) Equal distances: Avg = (2 × S₁ × S₂) / (S₁ + S₂) Relative: Towards → add speeds. Same direction → subtract speeds Train + Platform: Distance = Train length + Platform length
Q1 Medium

How much time is needed to travel 200 km at 50 km/h?

  • A. 3
  • B. 2
  • C. 5
  • D. 4 ✓
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Time = Distance / Speed = 200/50 = 4 hours.
Q2 Medium

A bike runs at 40 km/h for 3 hours. Find the distance travelled.

  • A. 110
  • B. 130
  • C. 100
  • D. 120 ✓
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Distance = Speed x Time = 40 x 3 = 120 km.
Q3 Medium

How much time is needed to travel 160 km at 40 km/h?

  • A. 4 ✓
  • B. 3
  • C. 5
  • D. 2
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Time = Distance / Speed = 160/40 = 4 hours.
Q4 Medium

A bike runs at 30 km/h for 5 hours. Find the distance travelled.

  • A. 130
  • B. 150 ✓
  • C. 140
  • D. 160
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Distance = Speed x Time = 30 x 5 = 150 km.
Q5 Medium

How much time is needed to travel 180 km at 60 km/h?

  • A. 3 ✓
  • B. 4
  • C. 1
  • D. 2
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Time = Distance / Speed = 180/60 = 3 hours.
Q6 Medium

A bike runs at 40 km/h for 5 hours. Find the distance travelled.

  • A. 210
  • B. 180
  • C. 190
  • D. 200 ✓
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Distance = Speed x Time = 40 x 5 = 200 km.
Q7 Medium

A train covers 100 km in 2 hours. What is its average speed?

  • A. 60
  • B. 50 ✓
  • C. 35
  • D. 40
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Speed = Distance / Time = 100/2 = 50 km/h.
Q8 Medium

How much time is needed to travel 240 km at 60 km/h?

  • A. 3
  • B. 2
  • C. 5
  • D. 4 ✓
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Time = Distance / Speed = 240/60 = 4 hours.
Q9 Medium

A bike runs at 36 km/h for 5 hours. Find the distance travelled.

  • A. 190
  • B. 160
  • C. 180 ✓
  • D. 170
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Distance = Speed x Time = 36 x 5 = 180 km.
Q10 Medium

A train covers 120 km in 4 hours. What is its average speed?

  • A. 20
  • B. 15
  • C. 40
  • D. 30 ✓
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Speed = Distance / Time = 120/4 = 30 km/h.
Q11 Medium

How much time is needed to travel 60 km at 30 km/h?

  • A. 0
  • B. 1
  • C. 2 ✓
  • D. 3
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Time = Distance / Speed = 60/30 = 2 hours.
Q12 Medium

A bike runs at 36 km/h for 3 hours. Find the distance travelled.

  • A. 108 ✓
  • B. 98
  • C. 88
  • D. 118
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Distance = Speed x Time = 36 x 3 = 108 km.
Q13 Medium

How much time is needed to travel 100 km at 50 km/h?

  • A. 0
  • B. 2 ✓
  • C. 3
  • D. 1
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Time = Distance / Speed = 100/50 = 2 hours.
Q14 Medium

A bike runs at 54 km/h for 5 hours. Find the distance travelled.

  • A. 260
  • B. 250
  • C. 280
  • D. 270 ✓
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Distance = Speed x Time = 54 x 5 = 270 km.
Q15 Medium

How much time is needed to travel 80 km at 40 km/h?

  • A. 2 ✓
  • B. 3
  • C. 0
  • D. 1
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Time = Distance / Speed = 80/40 = 2 hours.
Q16 Medium

A bike runs at 40 km/h for 2 hours. Find the distance travelled.

  • A. 80 ✓
  • B. 90
  • C. 70
  • D. 60
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Distance = Speed x Time = 40 x 2 = 80 km.
Q17 Medium

A train covers 240 km in 4 hours. What is its average speed?

  • A. 50
  • B. 70
  • C. 45
  • D. 60 ✓
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Speed = Distance / Time = 240/4 = 60 km/h.
Q18 Medium

A bike runs at 54 km/h for 3 hours. Find the distance travelled.

  • A. 152
  • B. 162 ✓
  • C. 172
  • D. 142
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Distance = Speed x Time = 54 x 3 = 162 km.
Q19 Medium

A train covers 120 km in 2 hours. What is its average speed?

  • A. 70
  • B. 60 ✓
  • C. 50
  • D. 45
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Speed = Distance / Time = 120/2 = 60 km/h.
Q20 Medium

A bike runs at 72 km/h for 4 hours. Find the distance travelled.

  • A. 288 ✓
  • B. 278
  • C. 268
  • D. 298
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Distance = Speed x Time = 72 x 4 = 288 km.
Q21 Medium

How much time is needed to travel 120 km at 40 km/h?

  • A. 2
  • B. 3 ✓
  • C. 1
  • D. 4
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Time = Distance / Speed = 120/40 = 3 hours.
Q22 Medium

A bike runs at 30 km/h for 3 hours. Find the distance travelled.

  • A. 70
  • B. 90 ✓
  • C. 100
  • D. 80
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Distance = Speed x Time = 30 x 3 = 90 km.
Q23 Medium

How much time is needed to travel 250 km at 50 km/h?

  • A. 5 ✓
  • B. 4
  • C. 6
  • D. 3
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Time = Distance / Speed = 250/50 = 5 hours.
Q24 Medium

A bike runs at 60 km/h for 4 hours. Find the distance travelled.

  • A. 240 ✓
  • B. 250
  • C. 220
  • D. 230
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Distance = Speed x Time = 60 x 4 = 240 km.
Q25 Medium

A train covers 120 km in 3 hours. What is its average speed?

  • A. 25
  • B. 30
  • C. 40 ✓
  • D. 50
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Speed = Distance / Time = 120/3 = 40 km/h.
Q26 Medium

A bike runs at 48 km/h for 4 hours. Find the distance travelled.

  • A. 182
  • B. 202
  • C. 172
  • D. 192 ✓
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Distance = Speed x Time = 48 x 4 = 192 km.
Q27 Medium

How much time is needed to travel 60 km at 30 km/h?

  • A. 3
  • B. 1
  • C. 0
  • D. 2 ✓
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Time = Distance / Speed = 60/30 = 2 hours.
Q28 Medium

A bike runs at 54 km/h for 2 hours. Find the distance travelled.

  • A. 118
  • B. 98
  • C. 88
  • D. 108 ✓
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Distance = Speed x Time = 54 x 2 = 108 km.
Q29 Medium

A bike runs at 48 km/h for 2 hours. Find the distance travelled.

  • A. 96 ✓
  • B. 76
  • C. 86
  • D. 106
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Distance = Speed x Time = 48 x 2 = 96 km.
Q30 Medium

A train covers 140 km in 2 hours. What is its average speed?

  • A. 70 ✓
  • B. 80
  • C. 60
  • D. 55
Explanation: Use the fundamental formula: Speed = Distance ÷ Time. Always ensure units are consistent (convert km/hr to m/s by multiplying by 5/18 when needed). Speed = Distance / Time = 140/2 = 70 km/h.

Key Takeaways

  • Always convert to consistent units before solving (km to m, hours to seconds).
  • Average speed ≠ average of speeds. Use Total Distance ÷ Total Time.
  • For train crossing a platform: Distance = Train length + Platform length.
  • Relative speed when moving towards each other: add. Same direction: subtract.

Frequently Asked Questions

How do I convert km/hr to m/s?

Multiply by 5/18. For example, 72 km/hr = 72 × 5/18 = 20 m/s. To convert m/s to km/hr, multiply by 18/5.

How do I calculate average speed?

Average Speed = Total Distance ÷ Total Time. Never take the arithmetic mean of speeds. For two equal distances covered at different speeds: Average = (2 × S1 × S2) ÷ (S1 + S2).

How do relative speed problems work?

When objects move towards each other: Relative speed = S1 + S2. When moving in the same direction: Relative speed = |S1 - S2|. Time to meet/cross = Distance ÷ Relative Speed.

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