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 21 of 59.
Sekhar said:
1 decade ago
The first answer is the best answer
Ashwini said:
1 decade ago
@ Kalimuthu Thanks...I understand your solution.
Geeth said:
1 decade ago
Just now I know the formula for converting meter to feet. Thank you.
Sundar.
Sundar.
Sridhar said:
1 decade ago
Can any one say me about pole in this question?
Aditya said:
1 decade ago
Sonali invests 15% of her monthly salary in insurance policies. She spends 55% of her monthly salary in shopping and on household expenses. She saves the remaining amount of Rs. 12,750. What is Sonali's monthly income?
Jayanthi said:
1 decade ago
Lets take mnthy salry to be x;
then ,
x-15x/100+55x/100=12750;
x-14x/20=12750;
6x/20=12750;
x=(12750)20/6
x=42,5000;
monthly salry is Rs.42,500
then ,
x-15x/100+55x/100=12750;
x-14x/20=12750;
6x/20=12750;
x=(12750)20/6
x=42,5000;
monthly salry is Rs.42,500
Edger said:
1 decade ago
60*5/18 = how to calculate this logic, but I'm clear next step --50/3*9=150---guys please explan this.
Hifzur said:
1 decade ago
Its simple no need of going that 5/18 it wil give confusion.
Convert 60 km into meter i.e 60000m.
Now speed is 60000m/hr... convert it into per second.
i.e 60000/(60*60)=16.66
As we know length=(speed*time)
:.16.66*9 = 150.
Convert 60 km into meter i.e 60000m.
Now speed is 60000m/hr... convert it into per second.
i.e 60000/(60*60)=16.66
As we know length=(speed*time)
:.16.66*9 = 150.
Roshan machhi said:
1 decade ago
I understand it but just explain in detail.
Ghanshyam said:
1 decade ago
Nice explanation in detail. Thank you very much.
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