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:
355 comments Page 17 of 36.
Mohit said:
2 decades ago
Hey look it say train travels 50% faster then car. Suppose car travels at x speed than train travels at 50x. So its 150/100 thats as a % age.
RAMJAN RAEEN said:
8 years ago
Can anyone explain to me how 75/X - 75/ (3x/2) = 12.5?
How the time is the same in both case car and train if a halt is not considering?
How the time is the same in both case car and train if a halt is not considering?
Chinnu said:
1 decade ago
train lost 12.5 min , convert into hrs = 12/60 = 1/5.
Remaining time = 4/5.
4/5*75 = 60.
As it is 50% then total speed of car is 120.
Remaining time = 4/5.
4/5*75 = 60.
As it is 50% then total speed of car is 120.
Anu said:
9 months ago
Most of people saying 1/2 instead of 3/2 is wrong.
The train is 50% more means 1/2 and also 1 for the car speed is added, So it's 3/2.
The train is 50% more means 1/2 and also 1 for the car speed is added, So it's 3/2.
(15)
Lalit, said:
1 decade ago
Yes, Meetali T=d/s. The difference between the the time of car and train is 12. 5 min. i.e. we are calculating 75/x-75/3/2= 125/10*60.
Mancy said:
1 decade ago
Still I have a one confusion in my mind that why we are taking speed of a train as,
(50% of car+x) instead of 50% more i.e (50%+x).
(50% of car+x) instead of 50% more i.e (50%+x).
Helip said:
7 years ago
If we have to convert the minute in the second we will multiply with 60 then what does it mean in solution 125/10*60? Please tell me.
Pravin said:
1 decade ago
Time taken for car - time taken for train = 5/24 hr.
This equation is derived because both start at same time and end at same time.
This equation is derived because both start at same time and end at same time.
Manju said:
2 years ago
150/100 came because train is 50% faster
So, first find the 50% of 100 = that is 50.
Now add the 50 to the total 100% of car = 150.
So, first find the 50% of 100 = that is 50.
Now add the 50 to the total 100% of car = 150.
(83)
Hari said:
2 decades ago
Car speed be x then train speed is 50% more so. It must be 100+50 if we take car speed in percentile.
So train speed is 150/100 x.
So train speed is 150/100 x.
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