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 1 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)
Majji deepika said:
1 month ago
Given data:
Speed = 240km/hr.
t = 5hr.
By the way, to cover the same distance in another time t1 = 5/3.
Speed = distance/time.
dis = speed * time
dis = 240 * 5
dis = 1200km.
Speed = dis/time.
Speed = 1200/(5/3).
Speed = 3600/5 = 720km/hr.
Speed = 240km/hr.
t = 5hr.
By the way, to cover the same distance in another time t1 = 5/3.
Speed = distance/time.
dis = speed * time
dis = 240 * 5
dis = 1200km.
Speed = dis/time.
Speed = 1200/(5/3).
Speed = 3600/5 = 720km/hr.
(5)
Krutika said:
1 month ago
Why it is inverse at the final step? Please explain.
(2)
DHIVYA J said:
2 months ago
600 m = 0.6 km => 600/1000,
5 min = 0.0833 hr => 5/60,
Speed = dist/time.
s = 0.6 /0.0833.
= 7.2.
5 min = 0.0833 hr => 5/60,
Speed = dist/time.
s = 0.6 /0.0833.
= 7.2.
(5)
Madhan said:
4 months ago
Thanks all for giving explanation.
(5)
Magesh said:
6 months ago
240 * 5 * 3 ÷ 5 = 720.
(23)
Penumaka abhi said:
7 months ago
Given distance = 240.
Time = 5hours,
Dis = speed * time.
D = 240 * 5 = 1200.
Another dis=1 2 ÷ 3(mixed fraction is given)is converted into 5/3.
Dist= 1200÷5/3(divided by 5/3 is inverse isconverted 3/5).
D = 1200 ÷ 3/5 = 720.
1200 * 3/5 = 720.
Time = 5hours,
Dis = speed * time.
D = 240 * 5 = 1200.
Another dis=1 2 ÷ 3(mixed fraction is given)is converted into 5/3.
Dist= 1200÷5/3(divided by 5/3 is inverse isconverted 3/5).
D = 1200 ÷ 3/5 = 720.
1200 * 3/5 = 720.
(6)
Sonal said:
8 months ago
why 5\3 became 3\5? Please explain to me.
(24)
Batunde Collines said:
8 months ago
This has been so helpful. Thanks all.
(2)
Sonaram bobonga said:
9 months ago
Anybody explain to me how 5/3 became 3/5?
(12)
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