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?
230 m
240 m
260 m
320 m
None of these
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 7 of 7.

Ash said:   9 years ago
Please explain this step 500/9 * 9.

Amar said:   1 decade ago
kmph means kilometer per hour(Km/h).

Rishikesh said:   3 weeks ago
Thanks everyone, for explaining it.

Manish said:   1 decade ago
Why there you take x+270/9?

Pavan said:   1 decade ago
Why you add X and 270 ?

Kadoliya jitendra said:   1 decade ago
What is kmph?


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