Aptitude - Problems on Trains - Discussion

Discussion Forum : Problems on Trains - General Questions (Q.No. 1)
1.
A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train?
120 metres
180 metres
324 metres
150 metres
Answer: Option
Explanation:

Speed = 60 x 5 m/sec = 50 m/sec.
18 3

Length of the train = (Speed x Time).

Length of the train = 50 x 9 m = 150 m.
3

Discussion:
592 comments Page 15 of 60.

Gunjan kumari said:   3 months ago
Option D is the right answer.
(7)

Nagarur Yeswanth said:   3 years ago
60 *5/18 = 50/3.
450m/3 = 150m.
(6)

Sandeep said:   10 months ago
Agree, the answer is 150.
(6)

MM Aishwarya said:   9 months ago
Length = speed × time.
60*(5/18) = 50/3
(50/3)*9 = 150.
Length = 150 metres.
(6)

Kaustubh Kishor Salunkhe said:   8 months ago
@All Everyone,

For the people who asking how 5/18 came?

It is used to convert KMPH to MPS
Let me explain how and when to use it. The hint is in the Answers we can see 60 km/hr and answers in Meters.
If it's Vise Versa we will use 18/5 to get the answer in Kmph.
(6)

Md shahid said:   7 months ago
The answer is 150m.
(6)

ABISHEK said:   7 months ago
150m is the correct answer.
(6)

Rajakumara said:   3 years ago
It's a very good explanation to understand the equation. Thanks, everyone.
(5)

NARINDER KUMAR said:   3 years ago
9 = D*18/60 * 5 (USE S=D/T) AND (COVERT KM/HOUR IN TO M/SEC ) * 5/18.

So,
1 = D*2/300,
D = 300/2,
D = 150.
(5)

Pavan sai Rama said:   2 years ago
(MLT) Medical Lab Technician.
(5)


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