Aptitude - Problems on Trains - Discussion

Discussion Forum : Problems on Trains - General Questions (Q.No. 6)

Problems on Trains

A train 240 m long passes a pole in 24 seconds. How long will it take to pass a platform 650 m long?

65 sec

89 sec

100 sec

150 sec

Answer: Option

Explanation:

Speed =		240	m/sec = 10 m/sec.
		24

Required time =		240 + 650	sec = 89 sec.
		10

Discussion:

202 comments Page 14 of 21.

Madhu said: 1 decade ago

Here starting position (source) is train length and ending position is platform length (destination) ok.

Jitendra barod said: 1 decade ago

Speed = 240/24 = 10.

Speed = total distance/time.

Time = total distance/speed = (240+650)/10 = 89 sec.

Rajesh said: 7 years ago

Here, it should come 890 instead of 650. We should add both the values. So the correct answer is 89sec.

Brindha said: 1 decade ago

Train distance + Platform distance = Total time.

Train speed, hence 240+650 = 89.

Speed = 10 m/s.

Ayush Jain said: 9 years ago

I think that the and should be 65.

Since we have to take out speed and then to put in another.

Rahul said: 5 years ago

@All.

Why we take (240+ 65)?
I think 240/24 =10m/sec,
Platform length= 650,
Time= 650/10 = 65.

(2)

Pravin said: 9 years ago

@Natraj.

Please read your last line carefully,

That is d/s = 890/10 and the answer is = 89.

JEYANTHI said: 2 decades ago

Since it passes both the poles and the platform , the distance been taken as 890m.(240+650)

Bunny said: 1 decade ago

By adding 240+650, it says the distance travelled by the whole train to cross the platform.

FARHAN MAJEED said: 6 years ago

Answer 65 is correct because the question asks only about platform.

Why do you add 240?

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