Aptitude - Problems on Trains - Discussion
Discussion Forum : Problems on Trains - General Questions (Q.No. 11)
11.
A 270 metres long train running at the speed of 120 kmph crosses another train running in opposite direction at the speed of 80 kmph in 9 seconds. What is the length of the other train?
Answer: Option
Explanation:
Relative speed = (120 + 80) km/hr
| = |  |
200 x | 5 |  m/sec |
| 18 |
| = | |
500 | m/sec. |
| 9 |
Let the length of the other train be x metres.
| Then, | x + 270 | = | 500 |
| 9 | 9 |
x + 270 = 500
x = 230.
Discussion:
66 comments Page 6 of 7.
Murugan said:
8 years ago
@Sam.
Use this formula distance/time = speed.
Use this formula distance/time = speed.
Sam said:
8 years ago
Explain the following step.
x+270/9 = 500/9.
x+270/9 = 500/9.
Nilkant said:
7 years ago
Please, tell me when to find relative speed?
Yogesh said:
1 decade ago
Pleas let me know, where 100/3 comes from ?
Aswin said:
1 decade ago
Please let me know, where 100/3 comes from?
Prasad said:
1 decade ago
How this 5/18 came? Can you solve this ?
Sindhu said:
1 decade ago
Why we writing denominator 9 for x+270?
Srujana said:
8 years ago
Why we writing denominator 9 for x+270?
(1)
Swathi said:
9 years ago
Thanks alot. It is very helpful to me.
Onkar Babar said:
5 years ago
how we take x+270÷9? Please explain.
(1)
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