A man covers half of his journey at 30 km/h and the remaining half at 20 km/h. If the total time taken is 10 hours, the total distance is:
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Correct answer: (D) 240 km
DSSSB TGT / PGT · Mathematics
Time, Speed & Distance Previous Year Questions
11 Time, Speed & Distance (Mathematics) questions asked in DSSSB TGT / PGT previous year papers, each with the correct answer and explanation. Read them free on UTpaper, or attempt the full papers as timed online tests.
- 11 questions
- Official answer key
- Free
Other Mathematics topics
A policeman spots a thief at a distance of 200 m. The thief starts running at 10 km/h and the policeman chases him at 12 km/h. How far will the thief have run before he is caught?
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Correct answer: (C) 1000 m
A train running at 54 km/h crosses a man walking at 6 km/h in the same direction in 18 seconds. The length of the train is:
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Correct answer: (B) 240 m
A boat goes 24 km upstream in 6 hours and 20 km downstream in 4 hours. The speed of the boat in still water is:
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Correct answer: (A) 4.5 km/h
A car covers a certain distance in 5 hours at a speed of 72 km/h. What speed is needed to cover the same distance in 4 hours?
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Correct answer: (B) 90 km/h
Two trains of lengths 150 m and 200 m are running in opposite directions at 40 km/h and 50 km/h. In how much time will they cross each other?
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Correct answer: (C) 14 s
Walking at 4/5 of his usual speed, a man reaches his office 15 minutes late. His usual time to reach the office is:
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Correct answer: (B) 60 min
A train 240 m long passes a pole in 12 seconds. How long will it take to cross a platform 360 m long?
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Correct answer: (C) 30 s
A person goes from A to B at 40 km/h and returns from B to A at 60 km/h. His average speed for the whole journey is:
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Correct answer: (C) 48 km/h
A train of length 210 metres is running at a speed of 54 km/hr. In how much time it will
completely cross a platform of 390 metres?
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Correct answer: (C) 40 seconds
Explanation
Distance = 210 + 390 = 600 m and speed = 54 × 5/18 = 15 m/s. Time = 600/15 = 40 seconds.
A truck left 8 hours early than the scheduled time and in order to reach its destination
600 km away on time, it had to decrease its usual speed by 20 km/hr. What is the usual
speed of the truck?
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Correct answer: (B) 50 km/hr
Explanation
600/(s − 20) − 600/s = 8 gives s(s − 20) = 1500, so s = 50 km/hr. Check: 600/30 − 600/50 = 20 − 12 = 8 hours.
How to use these DSSSB TGT / PGT Mathematics questions
Every question here was asked in a real DSSSB TGT / PGT paper; the paper and shift are shown on the card, and the number opens the question on its own page. Try each one before tapping Show answer, then attempt the full DSSSB TGT / PGT papers as timed tests to check your speed under exam conditions.