Aptitude - Time and Distance - Discussion
Discussion Forum : Time and Distance - General Questions (Q.No. 2)
2.
An aeroplane covers a certain distance at a speed of 240 kmph in 5 hours. To cover the same distance in 1
hours, it must travel at a speed of:
hours, it must travel at a speed of:Answer: Option
Explanation:
Distance = (240 x 5) = 1200 km.
Speed = Distance/Time
Speed = 1200/(5/3) km/hr. [We can write 1 hours as 5/3 hours]
 Required speed = |
 |
1200 x | 3 |  km/hr |
= 720 km/hr. |
| 5 |
Discussion:
160 comments Page 4 of 16.
Rashmi said:
1 decade ago
Hi it's not 1 hr. The question is very clear. It is 1 2/3 hrs.
1 2/3 is in mixed fraction. To know more about converting mixed fraction you have @Mona's reply in the forum.
1 2/3 is in mixed fraction. To know more about converting mixed fraction you have @Mona's reply in the forum.
Bharath said:
9 years ago
If a boy walks at a speed of 12kmph, he takes 20 min to reach school. If he has to reach in 15 min, then with what speed he should walk?
Please tell me the solution.
Please tell me the solution.
Elester Miranda said:
1 year ago
1(2/3)= 100 mins (1hr = 60, (2/3) = 60×2/3= 40 , 60+40=100 mins).
5hr = 300 mins.
So, 300/100 = 3 (to cover the distance).
5hr = 240.
Therefore, 240 × 3 = 720.
5hr = 300 mins.
So, 300/100 = 3 (to cover the distance).
5hr = 240.
Therefore, 240 × 3 = 720.
(16)
Josh Koikkara said:
1 decade ago
Speed: 240Km/Hr
Time: 5Hrs
Distance= Speed*Time
D= 240*5
=1200m
Given, Time=5/3Hr
Speed= Distance/Time
= 1200/(5/3)
= 1200*3/5
=720 Km/Hr
Time: 5Hrs
Distance= Speed*Time
D= 240*5
=1200m
Given, Time=5/3Hr
Speed= Distance/Time
= 1200/(5/3)
= 1200*3/5
=720 Km/Hr
Srinivasan.S said:
2 decades ago
The distance wants cover with 1+(2/3)hour is 1200km.
1 + (2/3) = (3+2)/3 = 5/3.
speed=Distance/time
speed=1200km/(5/3)
speed=1200km*(3/5)
speed=720km/hr
1 + (2/3) = (3+2)/3 = 5/3.
speed=Distance/time
speed=1200km/(5/3)
speed=1200km*(3/5)
speed=720km/hr
Vijay said:
1 decade ago
Speed = distance/time.
Distance = same.
Speed S1 = 240, Speed S2=?
Time t1 = 5hours, time t2 = 3/5hours.
S1/S2 = t2*t1.
240/S2 = (3/5)/5.
S2 = 720 kmph.
Distance = same.
Speed S1 = 240, Speed S2=?
Time t1 = 5hours, time t2 = 3/5hours.
S1/S2 = t2*t1.
240/S2 = (3/5)/5.
S2 = 720 kmph.
M.Balaji said:
1 decade ago
d1=d2
240*5=x*(5/3)
3600=x*5
x=720(km/hr) If both are available in kmphr other we convert them as same.
It is very useful to students. I like this site.
240*5=x*(5/3)
3600=x*5
x=720(km/hr) If both are available in kmphr other we convert them as same.
It is very useful to students. I like this site.
Suchi said:
1 decade ago
Why this is wrong?
Speed = 240 km/hr.
Time = 5 hrs.
Distance = 240*5 = 1200 km.
Which means for 1 hr its 240 km. So for 5/3 hr it is 5/3 *240 = 400 km.
Speed = 240 km/hr.
Time = 5 hrs.
Distance = 240*5 = 1200 km.
Which means for 1 hr its 240 km. So for 5/3 hr it is 5/3 *240 = 400 km.
Anisha said:
8 years ago
Aeroplane travels total of 1200km to cover same distance in 1 hour it should travel wit 1200 kmph right but how come 720 kmph?
I want the explanation.
I want the explanation.
Mona said:
1 decade ago
1 2/3 is a mixed-fraction so 1st we have to multiply denominator with which is in-front of fraction & add it to numerator then we will get a 5/3.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers