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:
153 comments Page 1 of 16.
Rojob said:
1 year 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.
(49)
Shakti said:
1 year ago
How We can write 1 2/3hours as 5/3 hours?
Please explain.
Please explain.
(32)
Pratik said:
2 years ago
Distance = speed × time.
D = 240kmph × 5hrs
D = 1200km.
Then,
Speed = d÷t.
S = 1200km ÷ 1 2/3 hrs.
S = 720kmph.
D = 240kmph × 5hrs
D = 1200km.
Then,
Speed = d÷t.
S = 1200km ÷ 1 2/3 hrs.
S = 720kmph.
(27)
Jolsana said:
7 months ago
Given,
Speed = 240kmph.
T1 = 5 hours.
According to the formula,
Distance = speed * time.
= 240 * 5 = 1200km.
T2 = 5/3 hours.
Speed = distance/time.
= 1200*3/5.
= 720kmph.
Speed = 240kmph.
T1 = 5 hours.
According to the formula,
Distance = speed * time.
= 240 * 5 = 1200km.
T2 = 5/3 hours.
Speed = distance/time.
= 1200*3/5.
= 720kmph.
(26)
Vansh Chaudhary said:
2 years ago
Please explain me why 2/3 became 3/5 ?
(25)
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)
Buvaneswaran V said:
1 year 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.
(25)
Prashanth said:
1 year ago
1(2/3) is a mixed fraction.
= 1*2/3.
= Now we have to multiply denominator to 1 (1*3)
=3 + 2/3 = 5/3.
= 1*2/3.
= Now we have to multiply denominator to 1 (1*3)
=3 + 2/3 = 5/3.
(22)
Elester Miranda said:
9 months 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)
Ssewajje Debbie said:
10 months ago
But how does 5/3 turn to 3/5? Please explain.
(14)
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