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 22 of 35.
Anonymous said:
1 decade ago
Can someone explain this because I don't understand where all the fractions just popped out.
Mariyada Ramesh said:
11 months ago
Why do we have to subtract the speed of a car - the speed of a train?
Please explain to me
Please explain to me
(27)
Muthuraj said:
2 decades ago
125/10*60 here we are converting 12.5 min into hrs..12.5*10/10=125/10(min)--125/(10*60) hrs
Anomie said:
6 years ago
Let the car speed be x.
50% of car speed =50/100*x = x/2.
The train speed = x+x/2 = 3x/2.
50% of car speed =50/100*x = x/2.
The train speed = x+x/2 = 3x/2.
Bishal Subba said:
4 years ago
@All.
It is just 12.5/60 in the RHS eliminate the 10.
You will get the answer as 120kmph.
It is just 12.5/60 in the RHS eliminate the 10.
You will get the answer as 120kmph.
Laxmi priya said:
1 decade ago
Let the speed of the car be 100% and the train is 50% more
100%+50%=150%
that is 150/100
100%+50%=150%
that is 150/100
Snehesh said:
10 years ago
Car speed = x.
Train speed is 50% more.
Train speed = x + (50/100)x = x + 1/2x = 3/2x.
Train speed is 50% more.
Train speed = x + (50/100)x = x + 1/2x = 3/2x.
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.
Somya said:
1 decade ago
@Neo, your method is good. I just want to know how you got that 32.5? please elaborate?
Naga sai said:
5 years ago
@Rishika.
We are subtracting it because the time difference between them is 12.5 min.
We are subtracting it because the time difference between them is 12.5 min.
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