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 18 of 65.
Tapentadol said:
2 years ago
60km = 60000m.
1hr = 3600sec.
Now, if 60000m = 3600sec,
x = 9sec.
x = 60000m * 9sec/3600sec.
x = 150m.
1hr = 3600sec.
Now, if 60000m = 3600sec,
x = 9sec.
x = 60000m * 9sec/3600sec.
x = 150m.
(148)
Prashanth said:
1 decade ago
Speed = (60*(5/18)) divide 60&18 by 6, then,
Speed = (10*(5/3)) multiply 10 & 5,
Speed = (50/3).
That's all @Qaazi.
Speed = (10*(5/3)) multiply 10 & 5,
Speed = (50/3).
That's all @Qaazi.
Logan Dpm said:
10 years ago
One hour = 60 Km,
3600 Seconds = 60 Km,
60 Seconds = 1 Km,
9 Seconds = 0.15 Km,
1 Km = 1000 Meter.
0.15 Km = 150 Metter.
3600 Seconds = 60 Km,
60 Seconds = 1 Km,
9 Seconds = 0.15 Km,
1 Km = 1000 Meter.
0.15 Km = 150 Metter.
Shankaranathan .K said:
1 decade ago
Really its very nice guys. Thank you all for the explanation and your time spent in answering the question raised by other.
Bob Matthew said:
1 decade ago
@Mohammed Asif.
60x5/18=50/3. Now since the train crossed the pole in 9 seconds you multiply 50/3x9=150.
Hope this helps.
60x5/18=50/3. Now since the train crossed the pole in 9 seconds you multiply 50/3x9=150.
Hope this helps.
Dinesh said:
1 decade ago
Nice sir I don't know aptitude but this type explanation should be given that time so easy to learn. Thank you once again.
Shuvro Jyoti said:
1 decade ago
This math is simple. But your explanation makes the math more easy to learn specially for beginner like me. Thanks a lot.
Sachin said:
1 decade ago
This math is simple. But your explanation makes the math more easy to learn specially for beginner like me. Thanks a lot.
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%).
20%+70%+10%(1800) =100%,
10% is 1800,
so 10x1800 = 18000.
12600(70%) + 3600(20%) + 1800 (10%) = 18000 (100%).
Shashi kant gupta said:
1 decade ago
1hr = 60min and 1km = 1000m.
Let 1min = 6km.
And 1min = 60sec.
1000/60 = 16.6.
16.6 * 9 = 150m.
This is the answer.
Let 1min = 6km.
And 1min = 60sec.
1000/60 = 16.6.
16.6 * 9 = 150m.
This is the answer.
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