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:
300 kmph
360 kmph
600 kmph
720 kmph
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:
164 comments Page 17 of 17.

HARISHREE.A said:   6 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.

R Ravi kiran said:   6 years ago
At first, they given plane covers 240km in 5hours.

Which means 48 km per hours right?

Samir Mendhe said:   6 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.

Siddhesh said:   5 years ago
Can you tell me 5/3 means how many minutes?


Post your comments here:

Your comments will be displayed after verification.