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:
353 comments Page 19 of 36.
Ajit said:
8 years ago
The train lost about 12.5 minutes while stopping at the stations. How the time loss is calculated? Please anyone tell me.
Senhil said:
2 decades ago
Given train is 50% greater than car. Let car speed will be 50km/hr then train speed ll be 100km/hr. So 100+50=150 km/hr.
Sulbha said:
6 years ago
How can we decide that train speed is more than 50% means? Car speed is 100? how come.
We can assume anything why 100?
We can assume anything why 100?
Fazil said:
1 decade ago
Can't we say speed of train is 50% faster than car.
If speed of car is x, then train must move with 2x speed. Is it?
If speed of car is x, then train must move with 2x speed. Is it?
Saloni Adhikari said:
3 years ago
Here, How can we say given time in the question is equal to the value obtained after subtraction? Please explain me.
(13)
Karthik said:
1 decade ago
It says 50% more than Car's speed.
So if car's speed is X the train's speed is = (X+(50/100)X).
Hence (150/100)X.
So if car's speed is X the train's speed is = (X+(50/100)X).
Hence (150/100)X.
Sagar Bhamare said:
9 years ago
The total speed of a car 100% + 50% extra,
So the speed of the train is 150%.
Which can be written as (150/100)X.
So the speed of the train is 150%.
Which can be written as (150/100)X.
Tabish said:
1 decade ago
Actually it is 50% more.
i.e (100% + 50 %) * x.
((100/100) + (50/100)) * x.
(1 + (50/100)) * x.
(150/100) * x.
i.e (100% + 50 %) * x.
((100/100) + (50/100)) * x.
(1 + (50/100)) * x.
(150/100) * x.
Bhumi said:
1 decade ago
Car speed = x.
Train speed is 50% more.
Train speed = x+ (50/100) x = 100x + 50x/100.
= 150x/100.
= 3/2x Kmph.
Train speed is 50% more.
Train speed = x+ (50/100) x = 100x + 50x/100.
= 150x/100.
= 3/2x Kmph.
Rias said:
9 years ago
75km/s * 60 second = 4500sec,
50%-12.5 the train lost =37.5,
Speed = Distance/time.
then 4500sec/37.5 = 120km.
50%-12.5 the train lost =37.5,
Speed = Distance/time.
then 4500sec/37.5 = 120km.
(1)
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