Aptitude - Problems on Trains - Discussion
Discussion Forum : Problems on Trains - General Questions (Q.No. 16)
16.
A train travelling at a speed of 75 mph enters a tunnel 3
miles long. The train is 
mile long. How long does it take for the train to pass through the tunnel from the moment the front enters to the moment the rear emerges?
miles long. The train is mile long. How long does it take for the train to pass through the tunnel from the moment the front enters to the moment the rear emerges?Answer: Option
Explanation:
| Total distance covered |
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 Time taken |
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Discussion:
129 comments Page 6 of 13.
Chaitu said:
8 years ago
Y isn't miles converted to kms?
Sunny Singla said:
8 years ago
Aas per my understanding it's 3.2.
Total distance cover by train in minutes : 75/60 = 1.25,
Total Distance need to cover : 3.5+.25(enter)+.25(exit) = 4 miles,
In one minute it cover : 1.25 m.
Minutes required to travel 4 miles = 4/1.25 = 3.2.
Total distance cover by train in minutes : 75/60 = 1.25,
Total Distance need to cover : 3.5+.25(enter)+.25(exit) = 4 miles,
In one minute it cover : 1.25 m.
Minutes required to travel 4 miles = 4/1.25 = 3.2.
Milson marcelin said:
8 years ago
No because both are in miles.
Srj said:
8 years ago
Do we want to change miles to meters?
Prudhvi (palakol) said:
8 years ago
Simple 3.5 + 0.25 = 3.75,
3.75/75 = 0.05,
0.05 * 60 = 3.
3.75/75 = 0.05,
0.05 * 60 = 3.
Varinder said:
8 years ago
The total distance should be 7/2(tunnel)+1/4(while front entering in the tunnel)+1/4(while the rear is out of the tunnel) = 4 miles.
Priya said:
8 years ago
Can anyone explain 7/2+1/4=15/4 clearly?
Priya said:
9 years ago
Please explain how come 60?
Sathish said:
9 years ago
Why this problem isn't convert the miles to meters or K.meters?
Ajinath khedkar said:
9 years ago
Yes, Option C is the correct answer.
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