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 8 of 16.
Sujatha said:
7 years ago
1(2/3)is written as 1+(2/3)=(3*1+2)/3=(3+2)/3=5/3.
now we solve s=d/t,
S=1200/(5/3),
S=1200*3/5,
S=720.
now we solve s=d/t,
S=1200/(5/3),
S=1200*3/5,
S=720.
(1)
Ashok kumar parida said:
10 years ago
Distance = (240*5) = 1200 km.
S = D/T.
Speed = 1200/(5/3) km/hr.
My question where come from (5/3)?
S = D/T.
Speed = 1200/(5/3) km/hr.
My question where come from (5/3)?
Pradeep said:
8 years ago
@Sudha, @Satish.
S = 1200/5/3 is correct.
S = 1200*3/5 just for calculation 3is multiplied with 1200.
S = 1200/5/3 is correct.
S = 1200*3/5 just for calculation 3is multiplied with 1200.
Rojob said:
2 years ago
Distance are same. So, we can write;
D1 = D2.
S1*T1 = S2*T2.
240*5 = S2*5/3,
S2 = 240*3,
S2 = 720kmph.
D1 = D2.
S1*T1 = S2*T2.
240*5 = S2*5/3,
S2 = 240*3,
S2 = 720kmph.
(50)
Nil said:
1 decade ago
Those who says answer as 720, why you are taken time as 5/3 hr instead of 1 hr as given in d example.
V P Samy said:
1 decade ago
I have doubt in 5/3.
5*240=1200km
1*(sp)=1200km
.'.Speed=1200km/hr this is correct or not ?
5*240=1200km
1*(sp)=1200km
.'.Speed=1200km/hr this is correct or not ?
Ruchi said:
8 years ago
In the question, time is 1 2/3 hours, not one hour so we take it as 5/3 and get the answer as 720.
Vaitheesh kumar said:
10 years ago
2 + 3 = 5*1 = 5.
It is in fraction that is why should write need write in fraction form so 5/3.
It is in fraction that is why should write need write in fraction form so 5/3.
Pramoth said:
1 decade ago
Here the speed is given in Km/hr and time in hours, why the hours are not converted into mins ?
Rosy said:
1 decade ago
Hi friends, here in question they given as time for 1 hr, but all you guys taking as 5/3, why?
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