Aptitude - Time and Distance - Discussion
Discussion Forum : Time and Distance - General Questions (Q.No. 4)
4.
A train can travel 50% faster than a car. Both start from point A at the same time and reach point B 75 kms away from A at the same time. On the way, however, the train lost about 12.5 minutes while stopping at the stations. The speed of the car is:
Answer: Option
Explanation:
Let speed of the car be x kmph.
| Then, speed of the train = | 150 | x | = |  |
3 | x |  kmph. |
| 100 | 2 |
 |
75 | - | 75 | = | 125 |
| x | (3/2)x | 10 x 60 |
 |
75 | - | 50 | = | 5 |
| x | x | 24 |
| x = |
|
25 x24 | |
= 120 kmph. |
| 5 |
Discussion:
345 comments Page 33 of 35.
Nahid said:
5 years ago
Let,
Speed of the car= x kph.
So, speed of the train = x + 50% of x = (3x/2) kph.
Speed of the car= x kph.
So, speed of the train = x + 50% of x = (3x/2) kph.
Priyam said:
5 years ago
@Aditya Mohanty.
For converting the minute into the hour we take 12.5/60 and when we remove the decimal point it became 125/60*10.
For converting the minute into the hour we take 12.5/60 and when we remove the decimal point it became 125/60*10.
Shavra yaqub shah said:
5 years ago
T1 - T2 = 12.5 minutes
speed1/distance1 - speed2/distance2 = 12.5 minutes .
@All.
This is how you form the equation and solve the problem related to the time difference (early/late than usual),or speed difference or distance difference.
speed1/distance1 - speed2/distance2 = 12.5 minutes .
@All.
This is how you form the equation and solve the problem related to the time difference (early/late than usual),or speed difference or distance difference.
Jay said:
5 years ago
How 3/2 come? Please explain.
Hani said:
5 years ago
@Shavra Yaqub Shah.
I'm not getting your answer method, please explain to me in detail.
I'm not getting your answer method, please explain to me in detail.
Navas said:
5 years ago
I'm not getting your answer method, please explain to me in detail.
Aldrin said:
5 years ago
Also, they assumed that the car didn't stop anywhere and was continuously travelling.
XiYoZ said:
5 years ago
How (24 *25)/5 came?
Vicky045 said:
5 years ago
By Change Minute to hours 12.5*60.
Am I right, then how 12.5/60? Please explain me.
Am I right, then how 12.5/60? Please explain me.
Anonymous said:
5 years ago
@VIcky045.
Actually,
To take delay time of train we need to have express time in hr(given is in min).
To convert Minute to Hour (x minutes/60).
To convert Hour to Minute (x hours*60).
So,
Converting 12.5 mins to 12.5/60 hour.
125/10*60 also correct since it only removes decimals.
Actually,
To take delay time of train we need to have express time in hr(given is in min).
To convert Minute to Hour (x minutes/60).
To convert Hour to Minute (x hours*60).
So,
Converting 12.5 mins to 12.5/60 hour.
125/10*60 also correct since it only removes decimals.
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