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 2 of 65.
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.
Another 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.
Another Shortcut Method:
=>60 ×(5/18) × 9
=>60 × (5/18) × 9
=>60 × (5/2)
=>30 × 5.
=>150 meters.
(22)
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)
SHIVAM PRAJAPATI said:
3 months ago
The right answer is 150 meters.
(4)
Debarati Makal said:
3 months ago
The correct answer is Option D. 150 metres.
(2)
Bhagya said:
3 months ago
Answer 150.
(3)
Gayathri avula said:
3 months ago
Very useful. Thanks all for explaining.
(9)
DHANASURIYA M G said:
4 months ago
Length = Speed × Time.
First, convert the speed from km/hr to m/s:
60 km/hr = 60 × (5/18) m/s = 50/3 m/s.
Then, multiply by the time (9 seconds):
Length = (60 × 5/18) × 9 = 150 meters
First, convert the speed from km/hr to m/s:
60 km/hr = 60 × (5/18) m/s = 50/3 m/s.
Then, multiply by the time (9 seconds):
Length = (60 × 5/18) × 9 = 150 meters
(22)
Santhosh said:
5 months ago
It's good. Thanks all for explaining the answer.
(14)
Pallavi said:
5 months ago
The answer is 150m/s.
(6)
Naresh said:
5 months ago
Good Explanation. Thanks everyone.
(4)
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