MAH MCA CET 2024
If a train travels 60 miles per hour, how long will it take to cover 120 miles?
Answer (Detailed Solution Below)View answer ā¾Hide ā“
Answer: Option B ā 2 hours
Detailed Solution
Time .
hours.
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In 2 hours at 60 miles per hour the train covers miles.ā Common trap
Option (A), 1 hour, covers only 60 miles, half of the 120 miles required.Quick tip
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Ask a doubtMore Time, Speed & Distance Questions
View all āŗ- Q1.Two trains start at the same time from A and B, 200 km apart, towards each other and meet at a distance of 110 km from A. Find the ratio of the speeds of train A and train B.
- Q2.Two trains, A and B, start simultaneously from two stations apart. Train A travels at , and Train B travels at . If a bird starts flying from Train A towards Train B at and immediately turns back upon reaching Train B, continuing this until the trains meet, what total distance does the bird cover?
- Q3.Two trains, A and B, start simultaneously from two stations apart. Train A travels at , and Train B travels at . If a bird starts flying from Train A towards Train B at and immediately turns back upon reaching Train B, continuing this until the trains meet, what total distance does the bird cover?
- Q4.A car covers 15 km, 20 km, 30 km and 12 km at speeds of 20 km/hr, 30 km/hr, 40 km/hr and 30 km/hr respectively The average speed of the car for the total journey is:
- Q5.A 140 m long train crosses a platform in 30 seconds at a speed of 36 km/h. What is the length of the platform?
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Time, Speed & Distance ā Preparation
This question tests your understanding of Time, Speed & Distance, a key topic in the Quantitative Aptitude section. The detailed solution above uses a step-by-step approach to show the reasoning, and where available, a shortcut that helps you solve similar questions in under 90 seconds during the actual exam.
Time, speed and distance questions are built on one relationship: distance = speed x time. The topic covers average speed, relative speed of objects moving in the same or opposite directions, problems on trains crossing poles, platforms and other trains, boats and streams, and races. Two shortcuts solve a large share of these questions. To convert km/h to m/s, multiply by 5/18. When equal distances are covered at speeds a and b, the average speed is 2ab/(a + b), not the simple average. For trains, remember that the distance covered while crossing includes the length of the train itself. Ratio reasoning also helps: at a constant distance, time is inversely proportional to speed. Practise the questions below on trains, boats, relative speed and average speed, each with a step-by-step solution.