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:
162 comments Page 10 of 17.
RAPTOR said:
1 decade ago
In the question I read it as to find the speed to cover the same distance in 1 hour (not as 1 2/3).
Either I read is right or all others read it wrong, I got the answer 1200kmph.
My logic is, since the total distance calculated is 1200 km, and in one hour it should cover the same distance, my answer is right.
Either I read is right or all others read it wrong, I got the answer 1200kmph.
My logic is, since the total distance calculated is 1200 km, and in one hour it should cover the same distance, my answer is right.
Naren said:
1 decade ago
Here they wrote fraction 5/3 as mixed numbers (1 2/3).
Let me explain how to write it.
Here, the whole number is 1.
The denominator is 3 and the numerator is 2.
I) 1st Multiply the whole number by the denominator. i.e. 3*1=3.
II) Add the result to the numerator: i.e 3+2=5.
III) Now The numerator is 5. The denominator remains 3. --> so 5/3.
We got the output.
Let me explain how to write it.
Here, the whole number is 1.
The denominator is 3 and the numerator is 2.
I) 1st Multiply the whole number by the denominator. i.e. 3*1=3.
II) Add the result to the numerator: i.e 3+2=5.
III) Now The numerator is 5. The denominator remains 3. --> so 5/3.
We got the output.
(4)
Vimo said:
1 decade ago
How to get 3/5?
Aishu said:
1 decade ago
Exactly even I dint get how 3/5 can anyone tell?
Julius said:
1 decade ago
I got the point of 5/3 but I don't get how it becomes 3/5?
Chandra Bhushan said:
1 decade ago
An aeroplane leaves late by 30 minutes. It has to cover a distance of 1200Km. The pilot has to increase its speed by 200Km/Hr to reach its destination on time. Find out the original speed of the aeroplane.
Vignesh said:
1 decade ago
Friends problem is in question sometime it shows 1 hrs and sometimes 1 2/3 hrs.
Vaibhav said:
1 decade ago
Use the simple formula to solve such type example.
v1t1 = v2t2t.
v1t1 = v2t2t.
Vaibhav said:
1 decade ago
When distance is same. At that time use the following formula.
v1t1= v2t2.
We have:
v1=240.
t1=5.
t2=5/3.
Therefore we easily find out v2 =720.
v1t1= v2t2.
We have:
v1=240.
t1=5.
t2=5/3.
Therefore we easily find out v2 =720.
Rashmi said:
1 decade ago
Hi it's not 1 hr. The question is very clear. It is 1 2/3 hrs.
1 2/3 is in mixed fraction. To know more about converting mixed fraction you have @Mona's reply in the forum.
1 2/3 is in mixed fraction. To know more about converting mixed fraction you have @Mona's reply in the forum.
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