Time, Speed & Distance

SSC CGL · Quantitative Aptitude · 34 practice questions with answers and explanations: 12 Easy, 11 Medium, 11 Hard.

Sample questions

Sample Easy question 1

A train travels 300 km in 5 hours. Find its speed.

  1. 50
  2. 55
  3. 60
  4. 65
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Answer: C. Speed = distance/time = 300/5 = 60 km/h.

Sample Medium question 2

A boat's speed in still water is 10 km/h and the current's speed is 2 km/h. Find the time taken to travel 24 km upstream.

  1. 2.5 hours
  2. 3 hours
  3. 3.5 hours
  4. 4 hours
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Answer: B. Upstream speed = 10-2 = 8 km/h. Time = 24/8 = 3 hours.

Sample Hard question 3

A is twice as fast a runner as B. In a 300 m race, what head start should A give B so that they finish in a dead heat?

  1. 100 m
  2. 120 m
  3. 150 m
  4. 180 m
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Answer: C. For a dead heat, both must take the same time. If A gives B a head start of h, B runs (300-h) m while A runs 300 m, in the same time. Since A is twice as fast: 300/(2v) = (300-h)/v, giving 150 = 300-h, so h = 150 m.

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