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:
37 comments Page 1 of 4.
Anushree said:
4 years ago
@All.
Simply;
First of all, we need to divide 5 by 10, the answer will be 0.5/half so we need to draw two lines for each day, for ex ll-1,ll-2 etc.
And after it comes to 5 just continue drawing two lines for a day (so we will do like this- ll-6, ll-7 and ll-8 )
Now we need to see the number of lines we have drawn, that is 6, then the answer will be 6.
Thank you.
Simply;
First of all, we need to divide 5 by 10, the answer will be 0.5/half so we need to draw two lines for each day, for ex ll-1,ll-2 etc.
And after it comes to 5 just continue drawing two lines for a day (so we will do like this- ll-6, ll-7 and ll-8 )
Now we need to see the number of lines we have drawn, that is 6, then the answer will be 6.
Thank you.
Jefferson said:
7 years ago
5/8 of the work is completed in 10 days.
So we get the remaining work = (1-5/8).
= 3/8.
Completing work is directly proportional to days.
Hence direct proportion where x/y = constant.
Let we take the time taken to complete 3/8 be x.
And therefore = 10/(5/8) = 16,
for 3/8=8x/3,
thus 8x/3=16,
8x = 48,
and x = 6days.
So we get the remaining work = (1-5/8).
= 3/8.
Completing work is directly proportional to days.
Hence direct proportion where x/y = constant.
Let we take the time taken to complete 3/8 be x.
And therefore = 10/(5/8) = 16,
for 3/8=8x/3,
thus 8x/3=16,
8x = 48,
and x = 6days.
Venkat Ravi said:
8 years ago
Consider a job value is 100(not given).
8/3 of work is done in 10 days then,
(8/3)*100 = 62.5(ie.,62.5% of work is completed in 10 days then the remaining work will be 37.5).
For 10 days 67.5.
For single day=(67.5/10)=6.75(ie.,per day work).
Remaining days=(remaining work/per day work) = (37.5/6.75) = 6 days.
8/3 of work is done in 10 days then,
(8/3)*100 = 62.5(ie.,62.5% of work is completed in 10 days then the remaining work will be 37.5).
For 10 days 67.5.
For single day=(67.5/10)=6.75(ie.,per day work).
Remaining days=(remaining work/per day work) = (37.5/6.75) = 6 days.
Pavan Power star PK fan said:
10 years ago
He takes 10 days to complete 5/8 of the job.
In 1 day he does 5/80 of job.
If the job is complete then fraction will become 1.So (work done in 1 day) * (no. of days ) = 1.
Then, the number of days = 16.
But he did 10 days work already so the remaining days needed to complete the job is 6 days.
In 1 day he does 5/80 of job.
If the job is complete then fraction will become 1.So (work done in 1 day) * (no. of days ) = 1.
Then, the number of days = 16.
But he did 10 days work already so the remaining days needed to complete the job is 6 days.
Raji said:
1 week ago
5/8 th of the work in 10 days.
(1-5/8) = 3/8 th of the work in 'x' days.
cross multiplication : 5/8 --> 10.
3/8 --> x.
5/8 * x = 3/8 * 10.
x = 6.
(1-5/8) = 3/8 th of the work in 'x' days.
cross multiplication : 5/8 --> 10.
3/8 --> x.
5/8 * x = 3/8 * 10.
x = 6.
Ram said:
10 years 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 = 10 days,
Therefore, 1 work of a job = 10/5 = 2 days,
Now remaining work are (8-5) = 3,
1 work = 2 days,
So, 3 work of a job = 3*2 = 6 days. (2+2+2).
Out of 8 he does 5 in 10 days (given in the question).
So, 5 work of a job = 10 days,
Therefore, 1 work of a job = 10/5 = 2 days,
Now remaining work are (8-5) = 3,
1 work = 2 days,
So, 3 work of a job = 3*2 = 6 days. (2+2+2).
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
Kathik said:
1 decade ago
Given that 5/8 (job) = 10 days.
Then for full job completion take:
1(job) = 10(8/5).
= 16 days.
So in question asked how many remaining days to finish the job.
So Total days - Given days.
= 16 - 10 = 6 days.
Then for full job completion take:
1(job) = 10(8/5).
= 16 days.
So in question asked how many remaining days to finish the job.
So Total days - Given days.
= 16 - 10 = 6 days.
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.
Pujan Das said:
7 years ago
5/8 is completed in 10 days.
Hence, 1 (100%) will be completed in (10*8)/5 = 16 days.
The rate of work remains constant. (important point).
Thus, Remaining days = total days - elapsed = 16 - 10 = 6 days.
Hence, 1 (100%) will be completed in (10*8)/5 = 16 days.
The rate of work remains constant. (important point).
Thus, Remaining days = total days - elapsed = 16 - 10 = 6 days.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers