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:
643 comments Page 23 of 65.

Sundar said:   2 decades ago
Feet to Meter conversion: 1 feet = 0.3048 meter

Meter to Feet conversion: 1 meter = 3.28083 feet
(2)

Priya said:   1 decade ago
All the explanations are very easy understand and it is more useful for beginners hopeful thanks.

Teja said:   10 years ago
@Sundar, @Kalimuthu & @Sungathan.

Really great explanation. Thank you all for your explanations.

Darshan thakur said:   1 decade ago
60 km/3600 sec = 0.016667.

0.016667 km/sec*9 sec = 0.15 sec.

0.15 sec*1000 meter = 150 meter.

Thangaraj K. said:   1 decade ago
Answer = sec/speed*1000 (i.e. - multiplied with 1000 to convert to metres )

=9/60*1000 = 150m

Jyothi said:   2 years ago
Conversion formula for km/hr into m/sec = 5/18.

Conversion formula for m/sec into k/m = 18/5.
(34)

Naveen said:   1 decade ago
Time = Distance/Speed.

From this Distance = Time*Speed.

= 9*(60*(5/18)) = 149.9999.

= 150.

Dharanish said:   7 years ago
Convert km to m - 60000.
Convert hr to sec - 3600.
60000/3600 = 16.666(speed)*9 (time) = 150.

Ezhil N said:   2 years ago
Conversion formula for km/hr into m/sec = 5/18.
Conversion formula for m/sec into k/m = 18/5.
(55)

Nehru said:   1 decade ago
Answer = (sec/meter)*1000(multiple with 1000 to convert to speed).

Speed = 9/150*1000 = 60.


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