Aptitude - Time and Distance - Discussion
Discussion Forum : Time and Distance - General Questions (Q.No. 5)
5.
Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?
Answer: Option
Explanation:
Due to stoppages, it covers 9 km less.
| Time taken to cover 9 km = |  |
9 | x 60 |  min |
= 10 min. |
| 54 |
Discussion:
205 comments Page 6 of 21.
Dumi said:
1 decade ago
Can it be solved using x and y?
Yash said:
1 decade ago
I tried by this method:
- - - Speed Time Distance.
Stop : 54 1h D.
Non-S: 45 1-X h D.
D is common for both, so,
54 * 1h = 45*(1-x)h.
X = 1/5 hr ==> 12 mins.
What went wrong in this method.
- - - Speed Time Distance.
Stop : 54 1h D.
Non-S: 45 1-X h D.
D is common for both, so,
54 * 1h = 45*(1-x)h.
X = 1/5 hr ==> 12 mins.
What went wrong in this method.
Sonu singh said:
1 decade ago
Why we get 54 as denominator?
Kavya said:
1 decade ago
As we have subtracted the two speeds, then it would result as 9 kmph!
If 54 kmph means for 1hr------> 54km.
So now 9 kmph means 1hr------> 9km right so the answer is 60min.
If 54 kmph means for 1hr------> 54km.
So now 9 kmph means 1hr------> 9km right so the answer is 60min.
Aksh said:
1 decade ago
Answer is coming 12 min,
s = d/t.
54 = d because t = 1hr given -------- 1,
s = d/t.
45 = 54/(t+1) ------- 2.
By solving we get 12.
s = d/t.
54 = d because t = 1hr given -------- 1,
s = d/t.
45 = 54/(t+1) ------- 2.
By solving we get 12.
Brijesh Kesharia said:
1 decade ago
A car starts running with the initial speed of 40 km/h with its speed increasing every hour by 5 km/h. How many hours will it take to cover a distance of 385 km?
Dushanthi said:
1 decade ago
@Brijesh Kesharia,
40 + 45 + 50 + 55 + 60 + 65 + 70 = 385.
So, it takes 7 hrs.
40 + 45 + 50 + 55 + 60 + 65 + 70 = 385.
So, it takes 7 hrs.
Sumit Dubey said:
1 decade ago
@Dushanthi,
Is there any shortcut method for solving the same problem (Brijesh Kesharia's que. ) for more complex data?
Is there any shortcut method for solving the same problem (Brijesh Kesharia's que. ) for more complex data?
Ashish said:
1 decade ago
For all those who got answer as 12.
12 min is the stoppage time for (60+12) min i.e 72 min. So, for 60 min. i.e 1 hr it would be 60* 12/72=10 min.
12 min is the stoppage time for (60+12) min i.e 72 min. So, for 60 min. i.e 1 hr it would be 60* 12/72=10 min.
Alok kumar mishra said:
1 decade ago
54km less if it stop for 1 hr.
1km less if it stop for 1/54 hr.
9km less if it stop for 9/54 hr = 9/54*60 = 10 min.
1km less if it stop for 1/54 hr.
9km less if it stop for 9/54 hr = 9/54*60 = 10 min.
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