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 3 of 16.
Ajith said:
2 weeks ago
So many people is asking 1 2/3 becomes 5/3.
Here is the explanation.
1 2/3 is a mixed fraction so we converted it into an improper fraction.
1 2/3 3 comes to the left side, so it becomes.
1*3 +2/3 = 5/3.
Here is the explanation.
1 2/3 is a mixed fraction so we converted it into an improper fraction.
1 2/3 3 comes to the left side, so it becomes.
1*3 +2/3 = 5/3.
(3)
Buvaneswaran V said:
2 years ago
Give:
S1 = 240kmph.
T1 = 5 hours.
T2 = 1 1/2 hours = 5/3 hours.
D1=D2.
To Find:
S2 = ?
Solution:
D = S x T.
D1 = D2.
So, S1 x T1 = S2 x T2.
240 x 5 = S2 x 5/3.
S2 = (240 x 5 x 3 )/5.
S1 = 240kmph.
T1 = 5 hours.
T2 = 1 1/2 hours = 5/3 hours.
D1=D2.
To Find:
S2 = ?
Solution:
D = S x T.
D1 = D2.
So, S1 x T1 = S2 x T2.
240 x 5 = S2 x 5/3.
S2 = (240 x 5 x 3 )/5.
(26)
Bdboy Hasan said:
9 years ago
Previous time is 5 * 60 = 300 minute and new time is 60 + 40 = 100 minute.
So, we need to increase speed 3 times as our required time is reduced 3 times.
So the speed will be 240 * 3 = 720 kmph.
So, we need to increase speed 3 times as our required time is reduced 3 times.
So the speed will be 240 * 3 = 720 kmph.
Samir Mendhe said:
5 years ago
Distance= S * T.
Given 240km/hr in 5hr.
So,1hr =240 km.
then 5hr ---> 5*240 = 1200 km.
Now to cover distance 1200km in 5/3hr.
So, you can apply speed formula and the answer will 720 km/hr.
Given 240km/hr in 5hr.
So,1hr =240 km.
then 5hr ---> 5*240 = 1200 km.
Now to cover distance 1200km in 5/3hr.
So, you can apply speed formula and the answer will 720 km/hr.
Deepak gavade said:
2 years ago
Distance = S x T
= 240 * 5.
= 1200 KM/hr.
SPEED = D/T.
1 2/3 = (1*2+3)/3 = 5/3.
S =1200 / 5/3.
=1200 * 3/5.
= 720 Km/Hr.
= 240 * 5.
= 1200 KM/hr.
SPEED = D/T.
1 2/3 = (1*2+3)/3 = 5/3.
S =1200 / 5/3.
=1200 * 3/5.
= 720 Km/Hr.
(25)
Saran said:
5 years ago
Distance= 240x5= 1200km.
speed = distance/ time.
=1200/(5/3).
=(1200 x 3)/5,
=3600/5,
=720km/h.
speed = distance/ time.
=1200/(5/3).
=(1200 x 3)/5,
=3600/5,
=720km/h.
(2)
Manasa said:
1 decade ago
1 hr become 5/3hr as:
1 hr is 1/3 rd of part in 5hrs that means 1 = 3/3.
1 = (5-2)/3, 1 = (5/3)-(2/3), 1+(2/3) = 5/3,
Then 5/3 = 5/3.
Here it is proved 1hr is 1/3rd of part in 5hrs.
1 hr is 1/3 rd of part in 5hrs that means 1 = 3/3.
1 = (5-2)/3, 1 = (5/3)-(2/3), 1+(2/3) = 5/3,
Then 5/3 = 5/3.
Here it is proved 1hr is 1/3rd of part in 5hrs.
HARISHREE.A said:
5 years ago
D=S*T.
=240*5,
=1200 km/hr.
1 2/3 hrs can be written as 5/3hrs.
Considering the formula:
D = S*T.
1200 = x*5/3(Keeping the unknown speed as x),
1200*3/5 = x,
720 = x,
= 720km/hr.
=240*5,
=1200 km/hr.
1 2/3 hrs can be written as 5/3hrs.
Considering the formula:
D = S*T.
1200 = x*5/3(Keeping the unknown speed as x),
1200*3/5 = x,
720 = x,
= 720km/hr.
Sumit Wanza said:
9 years ago
240 km hour in 5 hours so 240 * 5 = 1200 km total distance.
Distance = 1 + 2/5 = 3/5.
= 1200/1 * 3/5.
= 1200 * 3 = 3600, = 1 * 5 = 5 .
= 3600/5 = 720.
So, the answer is 720 km.
Distance = 1 + 2/5 = 3/5.
= 1200/1 * 3/5.
= 1200 * 3 = 3600, = 1 * 5 = 5 .
= 3600/5 = 720.
So, the answer is 720 km.
Satish said:
8 years ago
Why we do 5/3 and question is for 1 hour?
Why everyone doing fraction, it is just simply asked how much speed in 1 hour if some purpose is there for doing 5/3 then explain me.
Why everyone doing fraction, it is just simply asked how much speed in 1 hour if some purpose is there for doing 5/3 then explain me.
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