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:
643 comments Page 17 of 65.
Kopila said:
1 year ago
@All.
The answer here calculated is the distance of the train travelled in 9 seconds right, then how can you claim it as the length if the train?
The answer here calculated is the distance of the train travelled in 9 seconds right, then how can you claim it as the length if the train?
(7)
Gunjan kumari said:
1 year ago
Option D is the right answer.
(7)
Samyyyy said:
11 months ago
@All.
When we are converting km to meters, we have to take 5/18 as the options given in meters. So we have to do it.
When we are converting km to meters, we have to take 5/18 as the options given in meters. So we have to do it.
(7)
Shrinitha said:
6 months ago
I think the Answer is 150.
(7)
Pasupuleti Rohith Kumar said:
3 months ago
@all
Given:
Speed of train = 60 km/hr
Time taken to cross a pole = 9 sec
Formula:
=>Length of Train = Speed × Time
Step 1: Convert speed into m/s
=>60×(5/18)
=>(300/18)
=>(50/3) m/s
Step 2: Calculate the length of the train:
Length= (50/3)×9
=>50×3
=>150 meters
Shortcut Method:
=>60×(5/18)×9
=>60×(5/18)×9
=>60×(5/2)
=>30×5
=>150 meters
Given:
Speed of train = 60 km/hr
Time taken to cross a pole = 9 sec
Formula:
=>Length of Train = Speed × Time
Step 1: Convert speed into m/s
=>60×(5/18)
=>(300/18)
=>(50/3) m/s
Step 2: Calculate the length of the train:
Length= (50/3)×9
=>50×3
=>150 meters
Shortcut Method:
=>60×(5/18)×9
=>60×(5/18)×9
=>60×(5/2)
=>30×5
=>150 meters
(7)
Farhat Tyagi said:
2 months ago
Good, Thanks all for explaining it.
(7)
Jyothi said:
7 days ago
How did 5/18 came? Please explain.
(7)
Nagarur Yeswanth said:
4 years ago
60 *5/18 = 50/3.
450m/3 = 150m.
450m/3 = 150m.
(6)
Sandeep said:
2 years ago
Agree, the answer is 150.
(6)
MM Aishwarya said:
2 years ago
Length = speed × time.
60*(5/18) = 50/3
(50/3)*9 = 150.
Length = 150 metres.
60*(5/18) = 50/3
(50/3)*9 = 150.
Length = 150 metres.
(6)
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers