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?
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:
587 comments Page 11 of 59.
Raju said:
1 decade ago
(60*1000*9)m/3600s = 150m.
Nithya said:
1 decade ago
Hi @Latha! Can you explain this problem (sqrt(3N))^3/2 = 90?
Elamathi.A said:
1 decade ago
A bus crossing a 42 kilometers in 50 minutes. What is the average speed of the bus?
Savitha said:
1 decade ago
Hi please help me to get the answer for (sqrt (3N))^3/2=90..
Pradeep said:
1 decade ago
The answer is simple. We are converting the 'kilo-meters/hour' value into 'meters/second'.
Let me explain about converting km/hr into m/s in detail.
1 km = 1000 meters.
1 hr = 3600 seconds.
1 km/hr = 1000/3600 m/s
= 10/36 m/s
= 5/18 m/s.
Therefore 1 km/hr = 5/18 m/sec.
Let me explain about converting km/hr into m/s in detail.
1 km = 1000 meters.
1 hr = 3600 seconds.
1 km/hr = 1000/3600 m/s
= 10/36 m/s
= 5/18 m/s.
Therefore 1 km/hr = 5/18 m/sec.
Pradeep said:
1 decade ago
Distance = speed*time(50/2*9 = 150) m.
So, 150 m is distance traveled by the train, length of the train can be lower than distance. So can't say 150 m exact.
So, 150 m is distance traveled by the train, length of the train can be lower than distance. So can't say 150 m exact.
Kuldeep said:
1 decade ago
*Simple solution*
We know that,
1) 60km/1hr= 60000m/3600sec , (1hr=3600sec).
*Calulation = 60000/3600 = 16.66m/sec.
16.66x9 = 149.99 = 150m answer.
We know that,
1) 60km/1hr= 60000m/3600sec , (1hr=3600sec).
*Calulation = 60000/3600 = 16.66m/sec.
16.66x9 = 149.99 = 150m answer.
Raji said:
1 decade ago
I couldn't expect that for a single question which is having so many methods.
Abhi said:
1 decade ago
Can you explain this problem (sqrt(3N))^3/2 = 90?
Vijay katwal said:
1 decade ago
(60*1000*9)m/3600s = 150m.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers