A train running at 72 km/h passes a tunnel 300 meters long in 25 seconds. Find the length of the train. MCQ with Answer and Explanation
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Question #1
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In a 200-meter race, A finishes in 22 seconds and B finishes in 25 seconds. By what distance does A beat B?
Correct Answer: Option A
Explanation:
Speed of B = 200 / 25 = 8 m/s. Distance covered by B when A crosses the finish line at 22 seconds = 8 * 22 = 176 meters. Winning margin = 200 - 176 = 24 meters.
Speed of B = 200 / 25 = 8 m/s. Distance covered by B when A crosses the finish line at 22 seconds = 8 * 22 = 176 meters. Winning margin = 200 - 176 = 24 meters.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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Walking at 4/5 of his normal pace, an editor reaches his office 15 minutes late. What is his exact normal time to reach the office?
Correct Answer: Option D
Explanation:
New speed = 4/5 of usual speed => New time = 5/4 of usual time. Difference = 1/4 of usual time = 15 minutes. Normal time = 15 * 4 = 60 minutes.
New speed = 4/5 of usual speed => New time = 5/4 of usual time. Difference = 1/4 of usual time = 15 minutes. Normal time = 15 * 4 = 60 minutes.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A sonic pulse registers a speed of 340 m/s. How many seconds will it take to span a straight distance line of 8.5 km?
Correct Answer: Option B
Explanation:
Distance = 8.5 km = 8500 meters. Time taken = 8500 / 340 = 25 seconds.
Distance = 8.5 km = 8500 meters. Time taken = 8500 / 340 = 25 seconds.
This question belongs to:
Maths
Time Speed and Distance
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