A train 400 m long running at 90 km/h enters a tunnel 800 m long. How long does it take to clear the tunnel completely?
Correct answer A. 48 seconds
Topic / 64 questions
Time and Distance MCQs test how speed, time and distance relate to one another, using the rule that distance equals speed multiplied by time. They suit aptitude test candidates in Pakistan, India and Bangladesh, and each question reveals its correct answer immediately, so you can check every step of your working.
Correct answer A. 48 seconds
Correct answer C. 3 : 4
Correct answer B. 120 seconds
Correct answer A. 500
Correct answer C. 72 km/h
Correct answer C. 18 km
Correct answer D. 12 noon
Correct answer B. 10 seconds
Correct answer A. 50 km/h
Correct answer C. 90 km/h
Correct answer C. 12 km
Correct answer B. 75 minutes
Correct answer A. 2.5 hours
Correct answer C. 96 km
Correct answer B. 60 km/h
Correct answer B. 25 km/h
Correct answer C. 480 km
Correct answer B. 180 km
Correct answer B. 90 km/h
Correct answer C. 54 km/h
This topic is a staple of quantitative reasoning sections. Questions include buses with and without stoppages, where you find how many minutes per hour are spent stopped, and journeys split into halves at different speeds, which call for average speed rather than a simple mean. You will also see problems where a faster or slower speed changes the time taken, aircraft slowed by bad weather, and towns on a straight line. Some items are data sufficiency questions asking which statements are enough to find the answer. Converting km/h to m/s by multiplying by 5/18 is a frequent step.
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Bangladesh
When equal distances are covered at speeds x and y, the average speed is 2xy divided by x plus y, not the simple average. For example, travelling equal distances at 40 km/h and 60 km/h gives an average speed of 48 km/h, because more time is spent at the slower speed.
Find the difference between the speed without stoppages and the speed with stoppages, then divide it by the speed without stoppages and multiply by 60. For speeds of 54 and 45 km/h, the bus loses 9 km each hour, so it stops for 9/54 of an hour, which is 10 minutes per hour.
Last reviewed October 2026