Aptitude - Chain Rule - Discussion
Discussion Forum : Chain Rule - General Questions (Q.No. 6)
6.
A man completes 
of a job in 10 days. At this rate, how many more days will it takes him to finish the job?
of a job in 10 days. At this rate, how many more days will it takes him to finish the job?
Answer: Option
Explanation:
| Work done = | 5 |
| 8 |
| Balance work = |  |
1 - | 5 |  |
= | 3 |
| 8 | 8 |
Let the required number of days be x.
| Then, | 5 | : | 3 | = :: 10 : x |  |
5 | x x = | 3 | x 10 |
| 8 | 8 | 8 | 8 |
 x = |
|
3 | x 10 x | 8 | |
| 8 | 5 |
x = 6.
Discussion:
36 comments Page 1 of 4.
Ranjan said:
1 decade ago
Comapare these two No. 5 and 6 please clear me. I don't understand these two question.
Shaunak said:
1 decade ago
Take the problem in the following way:.
A man can complete 5/8 of a work in 10 days. How long does it take to complete 3/8 of the same work?
A man can complete 5/8 of a work in 10 days. How long does it take to complete 3/8 of the same work?
Mr.Romana said:
1 decade ago
Its so simple...
work done in one day:5/8*10=1/16
remaining work is:1-5/8=3/8
3/8*8/3=1/6
1/6+1/6+1/6+1/6+1/6+1/6=1
it means the remaining work can be done in 6 days
work done in one day:5/8*10=1/16
remaining work is:1-5/8=3/8
3/8*8/3=1/6
1/6+1/6+1/6+1/6+1/6+1/6=1
it means the remaining work can be done in 6 days
M.v.krishna said:
1 decade ago
work days
5/8 10
8/8 x
5x/8=10
x=16
total work 16 days
remaining to do = (16-10) days
= 6 days
5/8 10
8/8 x
5x/8=10
x=16
total work 16 days
remaining to do = (16-10) days
= 6 days
Chandrasekar said:
1 decade ago
Remaining work is:1-5/8=3/8
I cant understand this step, someone explain ?
I cant understand this step, someone explain ?
Mini said:
1 decade ago
Total work of job= 8
Out of 8 he does 5 in 10 days (given in the question)
so 5 work of a job= 10days
Therefore, 1 work of a job= 10/5= 2days
Now remaining days are(8-5)=3days
So 3 work of a job=3*2=6 days.
Out of 8 he does 5 in 10 days (given in the question)
so 5 work of a job= 10days
Therefore, 1 work of a job= 10/5= 2days
Now remaining days are(8-5)=3days
So 3 work of a job=3*2=6 days.
Priyanka said:
1 decade ago
@Chandrasekar
Its too simple logic..
Consider the work done be 1.
They have completed 5/8 of work.
So remaining is 1-(5/8)=(8-5)/8=3/8
Its too simple logic..
Consider the work done be 1.
They have completed 5/8 of work.
So remaining is 1-(5/8)=(8-5)/8=3/8
Bhadra said:
1 decade ago
Very easy
For 5 parts work he takes 10days
for 3 parts ?
3*10/5=6days
For 5 parts work he takes 10days
for 3 parts ?
3*10/5=6days
Avijeet said:
1 decade ago
Hey guys its very easy...
5/8 work can be done in 10 days
So 1 work can be done in 10/(5/8) days=10*8/5=16 days
Hence remaining(1-5/8=3/8)work can be done in 16*3/8
=6 days
5/8 work can be done in 10 days
So 1 work can be done in 10/(5/8) days=10*8/5=16 days
Hence remaining(1-5/8=3/8)work can be done in 16*3/8
=6 days
Chalam said:
1 decade ago
Bhadra & Avijeet,
Nice explanations.
Thanks
Nice explanations.
Thanks
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