Aptitude - Problems on Trains - Discussion

Discussion Forum : Problems on Trains - General Questions (Q.No. 1)

Problems on Trains

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:

613 comments Page 52 of 62.

Santosh said: 8 years ago

Nice explanation, Thanks @Sundar.

Alok Dhiman said: 8 years ago

Nice explanation, thanks all.

Charmi said: 8 years ago

Out of his total income, Mr. Sharma spends 20% on house rent and 70% of the rest on household expenses. If he saves Rs 1,800 what is his total income (in rupees)?

Please explain the answer.

Tarasankar Dey said: 8 years ago

Thanks to all for explaining the answer.

Sarang said: 8 years ago

Distance = speed*time.
60*5/18*9,
60*5/2,
300/2 = 150.

Swapnali said: 8 years ago

Thanks to all for explaining the answer.

Sunil sharma said: 8 years ago

Tse speed of train 60km/h,
cross the poll with in 9 sec.
speed of train in 1 mint. = 1km,
Now, speed of train in 1 sec.= 1000/60= 16.67,
Now the length of train= 16.67*9 = 150 m.

Alpesh said: 8 years ago

1 km = 1000 m,
1 hours= 60 min.
60km=6 hours that 1km=1 hours,
1000/60*9=150,
So, D. 150 is correct.

Nilesh nande said: 8 years ago

Best explanations, thank you all.

Anomi said: 8 years ago

@Charmi.

20%+70%+10%(1800) =100%,
10% is 1800,
so 10x1800 = 18000.

12600(70%) + 3600(20%) + 1800 (10%) = 18000 (100%).

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