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 10 of 16.
Mohit said:
2 decades ago
It is (3*1)+2=5
So it 5/3 hours and now speed = distance/time that's why 3/5.
So it 5/3 hours and now speed = distance/time that's why 3/5.
(3)
Vignesh said:
1 decade ago
Friends problem is in question sometime it shows 1 hrs and sometimes 1 2/3 hrs.
Nikita said:
1 decade ago
Another way
This is an example of inverse variation
So,
240*5=5/3*x
x=720
This is an example of inverse variation
So,
240*5=5/3*x
x=720
Swarup said:
9 years ago
Actually, I can't understand that why we put distance=1200 km/hr and how?
Vinay said:
3 years ago
1. d=? s=240 t=5.
240=d/5=1200;
s=1200/1.6666 [2/3=1.666666] = 720.
240=d/5=1200;
s=1200/1.6666 [2/3=1.666666] = 720.
(8)
Omar Faruq said:
9 years ago
I think the question should be in 1 hour 40 minutes not in 1 hour.
Arjun said:
8 years ago
distance const d=c ,here s1t1=s2t2.
240*5÷5÷3=720kmph.
240*5÷5÷3=720kmph.
Naveen Kumar Reddy Gandluru said:
5 years ago
Distance is constant.
s1/S2=t2/t1.
240/S2=(5/3)/5.
S2=720kmph.
s1/S2=t2/t1.
240/S2=(5/3)/5.
S2=720kmph.
Vaibhav said:
1 decade ago
Use the simple formula to solve such type example.
v1t1 = v2t2t.
v1t1 = v2t2t.
Arjun said:
1 decade ago
Please explain in detail how it converts 1(2/3) hrs into 5/3hrs?
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