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:
163 comments Page 10 of 17.
Manasa said:
1 decade ago
1 hr become 5/3hr as:
1 hr is 1/3 rd of part in 5hrs that means 1 = 3/3.
1 = (5-2)/3, 1 = (5/3)-(2/3), 1+(2/3) = 5/3,
Then 5/3 = 5/3.
Here it is proved 1hr is 1/3rd of part in 5hrs.
1 hr is 1/3 rd of part in 5hrs that means 1 = 3/3.
1 = (5-2)/3, 1 = (5/3)-(2/3), 1+(2/3) = 5/3,
Then 5/3 = 5/3.
Here it is proved 1hr is 1/3rd of part in 5hrs.
Divyan said:
1 decade ago
Why we are multiplying 240*5?
Because they 5hrs right. So it has to be 5*3600 right.
Because they 5hrs right. So it has to be 5*3600 right.
Veerapandi E said:
1 decade ago
How come 5/3?
Dhanshri said:
1 decade ago
s = d/t.
s1 = d1/t1.
s2 = d2/t2.
s1t1 = s2t2/distance is same.
t2 = s1t1/s2.
t2 = 240*5/(5/3).
t2 = 720.
s1 = d1/t1.
s2 = d2/t2.
s1t1 = s2t2/distance is same.
t2 = s1t1/s2.
t2 = 240*5/(5/3).
t2 = 720.
Bhupesh shahare said:
1 decade ago
Still it confusing, how 5/3 comes?
Sai said:
1 decade ago
1200/5/3
= 1200*3/5 = 3600/5 = ?
= 1200*3/5 = 3600/5 = ?
Manoj said:
1 decade ago
Why distance is 3?
Gloria said:
1 decade ago
Please more explanation on 5/3?
Penny said:
1 decade ago
Either the options are incorrect or there is something seriously wrong with my basics.
How could 1 hour be written as 5/3?:-o.
How could 1 hour be written as 5/3?:-o.
Nama said:
1 decade ago
= (1+2/3).
= (3+2/3).
= (5/3).
= (3+2/3).
= (5/3).
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