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 19 of 35.
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:
10 years 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:
8 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)
Yash said:
6 years ago
Let Car speed is x.
The train speed is 50% faster than x.
Then the train speed is x+50%of x.
x+50x/100 =150x/100.
The train speed is 50% faster than x.
Then the train speed is x+50%of x.
x+50x/100 =150x/100.
Suja said:
1 decade ago
@ jamal:
We know that time=(distance/speed).
Here distance=75kmph and speed=3x/2.
Therefore time=75/(3x/2)
We know that time=(distance/speed).
Here distance=75kmph and speed=3x/2.
Therefore time=75/(3x/2)
NITISH GULERIA said:
1 decade ago
Hello friends don't confuse 50% more means x+50% = x+50/100, = x+1/2.
= LCM are 2 and whole equation are 3x/2.
= LCM are 2 and whole equation are 3x/2.
Srivishnu said:
8 years ago
It's 12.5 minutes.
To convert it to an hour it should be divided by 60.
i.e 12.5/60 hrs (or)125/(60*10) hrs.
To convert it to an hour it should be divided by 60.
i.e 12.5/60 hrs (or)125/(60*10) hrs.
Shashidhar said:
6 years ago
Given.
Time delay by 12.5 (minutes),
1hr = 60minutes,
1min = (1/60)hr, 125/10 = 12.5.
125/(10*60) = (5/24).
Time delay by 12.5 (minutes),
1hr = 60minutes,
1min = (1/60)hr, 125/10 = 12.5.
125/(10*60) = (5/24).
Sravani said:
5 years ago
Why to subtract the speed of the train from speed of car (75/x-75x/[3/2])?
Can anyone help me by explaining?
Can anyone help me by explaining?
(1)
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