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.
Anushree said:
3 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:
6 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:
7 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:
9 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.
Ram said:
9 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:
10 years 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:
6 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.
Shubham said:
7 years ago
A garrison of 750 men has provision for 20 weeks if, at the end of 4 weeks, they are reinforced by 450 men, how long the provision will last?
How to solve this by using the chain rule? Please help me.
How to solve this by using the chain rule? Please help me.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers