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SSC CGL Speed, Time & Distance Questions with Answers & Explanations

18 Speed, Time & Distance questions from the Quantitative Aptitude section of SSC CGL, each with the correct answer and a worked explanation. Try each question first, then tap Show answer to check. When you're ready, take the timed chapter-wise test to see your all-India rank.

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Question 1

A person travels from P to Q at 60 km/h and returns at 40 km/h. What is the average speed for the whole journey?

  1. A48 km/h
  2. B45 km/h
  3. C53 km/h
  4. D50 km/h
Show answer
Answer: (A) 48 km/h For equal distances, average speed = 2ab/(a + b) = 48 km/h.
Question 2

A speed of 162 km/h is equal to

  1. A45 m/s
  2. B81 m/s
  3. C583.2 m/s
  4. D50 m/s
Show answer
Answer: (A) 45 m/s Multiply by 5/18: 162 × 5/18 = 45 m/s.
Question 3

A train 90 m long running at 72 km/h crosses a platform in 25 seconds. What is the length of the platform?

  1. A390 m
  2. B440 m
  3. C410 m
  4. D500 m
Show answer
Answer: (C) 410 m Distance covered = 20 × 25 = 500 m = train + platform, so platform = 410 m.
Question 4

A train 100 m long running at 90 km/h crosses a platform in 32 seconds. What is the length of the platform?

  1. A680 m
  2. B730 m
  3. C800 m
  4. D700 m
Show answer
Answer: (D) 700 m Distance covered = 25 × 32 = 800 m = train + platform, so platform = 700 m.
Question 5

A speed of 198 km/h is equal to

  1. A60 m/s
  2. B99 m/s
  3. C712.8 m/s
  4. D55 m/s
Show answer
Answer: (D) 55 m/s Multiply by 5/18: 198 × 5/18 = 55 m/s.
Question 6

A train 510 m long is running at 108 km/h. How long will it take to cross a pole?

  1. A19 seconds
  2. B15 seconds
  3. C21 seconds
  4. D17 seconds
Show answer
Answer: (D) 17 seconds Speed = 108 × 5/18 = 30 m/s; time = 510 ÷ 30 = 17 s.
Question 7

A person travels from P to Q at 45 km/h and returns at 90 km/h. What is the average speed for the whole journey?

  1. A67.5 km/h
  2. B57 km/h
  3. C65 km/h
  4. D60 km/h
Show answer
Answer: (D) 60 km/h For equal distances, average speed = 2ab/(a + b) = 60 km/h.
Question 8

A boat goes 72 km downstream in 3 hours and 36 km upstream in 3 hours. What is the speed of the stream?

  1. A18 km/h
  2. B7 km/h
  3. C6 km/h
  4. D12 km/h
Show answer
Answer: (C) 6 km/h Downstream speed = 24, upstream = 12; stream = (downstream − upstream)/2 = 6 km/h.
Question 9

A train 80 m long running at 54 km/h crosses a platform in 24 seconds. What is the length of the platform?

  1. A260 m
  2. B280 m
  3. C360 m
  4. D310 m
Show answer
Answer: (B) 280 m Distance covered = 15 × 24 = 360 m = train + platform, so platform = 280 m.
Question 10

A speed of 54 km/h is equal to

  1. A20 m/s
  2. B15 m/s
  3. C10 m/s
  4. D27 m/s
Show answer
Answer: (B) 15 m/s Multiply by 5/18: 54 × 5/18 = 15 m/s.

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Question 11

A train 200 m long is running at 90 km/h. How long will it take to cross a pole?

  1. A12 seconds
  2. B8 seconds
  3. C10 seconds
  4. D7 seconds
Show answer
Answer: (B) 8 seconds Speed = 90 × 5/18 = 25 m/s; time = 200 ÷ 25 = 8 s.
Question 12

A person travels from P to Q at 40 km/h and returns at 60 km/h. What is the average speed for the whole journey?

  1. A50 km/h
  2. B48 km/h
  3. C53 km/h
  4. D45 km/h
Show answer
Answer: (B) 48 km/h For equal distances, average speed = 2ab/(a + b) = 48 km/h.
Question 13

A boat goes 60 km downstream in 3 hours and 48 km upstream in 3 hours. What is the speed of the stream?

  1. A4 km/h
  2. B18 km/h
  3. C3 km/h
  4. D2 km/h
Show answer
Answer: (D) 2 km/h Downstream speed = 20, upstream = 16; stream = (downstream − upstream)/2 = 2 km/h.
Question 14

A train 140 m long running at 72 km/h crosses a platform in 34 seconds. What is the length of the platform?

  1. A570 m
  2. B520 m
  3. C540 m
  4. D680 m
Show answer
Answer: (C) 540 m Distance covered = 20 × 34 = 680 m = train + platform, so platform = 540 m.
Question 15

A speed of 108 km/h is equal to

  1. A25 m/s
  2. B30 m/s
  3. C54 m/s
  4. D35 m/s
Show answer
Answer: (B) 30 m/s Multiply by 5/18: 108 × 5/18 = 30 m/s.
Question 16

A train 450 m long is running at 90 km/h. How long will it take to cross a pole?

  1. A20 seconds
  2. B15 seconds
  3. C16 seconds
  4. D18 seconds
Show answer
Answer: (D) 18 seconds Speed = 90 × 5/18 = 25 m/s; time = 450 ÷ 25 = 18 s.
Question 17

A boat goes 45 km downstream in 3 hours and 9 km upstream in 3 hours. What is the speed of the stream?

  1. A9 km/h
  2. B3 km/h
  3. C12 km/h
  4. D6 km/h
Show answer
Answer: (D) 6 km/h Downstream speed = 15, upstream = 3; stream = (downstream − upstream)/2 = 6 km/h.
Question 18

A train 70 m long running at 36 km/h crosses a platform in 31 seconds. What is the length of the platform?

  1. A220 m
  2. B270 m
  3. C310 m
  4. D240 m
Show answer
Answer: (D) 240 m Distance covered = 10 × 31 = 310 m = train + platform, so platform = 240 m.

These are RankerClub practice questions written in the SSC CGL pattern. They are not official SSC/IBPS/RRB papers.

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