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 2 of 4.
Shubham said:
8 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.
Shahid said:
1 decade ago
It can be solved this way also
To complete 5/8 part --- 10 days
To complete 8/8 parts ---- ? days
Solving, {(8/8) x 10}/{5/8} = 16 days
Therefore remaining days = 160- 10 = 6 days
To complete 5/8 part --- 10 days
To complete 8/8 parts ---- ? days
Solving, {(8/8) x 10}/{5/8} = 16 days
Therefore remaining days = 160- 10 = 6 days
Mr.Romana said:
2 decades 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
Chandan said:
9 months ago
He completes 5/8 of the work in 10 days.
He can complete the work in,
8/5 * 10 days,
= 80/5 days.
= 16 days.
He completed 10 days of work.
16 - 10 = 6 days.
He can complete the work in,
8/5 * 10 days,
= 80/5 days.
= 16 days.
He completed 10 days of work.
16 - 10 = 6 days.
(1)
Chophel said:
4 years ago
He completes 5/8 of the work in 10 days.
He can complete the work in
8/5 * 10 days,
= 80/5 days.
= 16 days.
He completed 10 days of work.
16-10= 6 days.
He can complete the work in
8/5 * 10 days,
= 80/5 days.
= 16 days.
He completed 10 days of work.
16-10= 6 days.
(6)
Sankar said:
1 decade ago
A's 10 days work 5/8.
Then A's one day 5/10 = 0.50.
Remaining work 3/8. So 2 days 1 work over.
Therefore remaining work is 3*2 = 6 days remaining over.
Then A's one day 5/10 = 0.50.
Remaining work 3/8. So 2 days 1 work over.
Therefore remaining work is 3*2 = 6 days remaining over.
Gokul raj said:
10 years ago
The work of 5 parts done in 10 days.
So, 10/5 = 2 days of time taken to complete one part.
Then, 5/8 has 3 remain parts 3 * 2(days) = 6 days.
Thank you.
So, 10/5 = 2 days of time taken to complete one part.
Then, 5/8 has 3 remain parts 3 * 2(days) = 6 days.
Thank you.
RAJAN said:
7 years ago
He completed 5 jobs out of 8, in 10 days so that means he completed 1 job in 2 days and to complete 3 more jobs (8-5=3) and he will take 6 days (3x2=6).
(2)
Ram said:
9 years ago
Look another eg;
1/2 work = 5 day
Then,
Getting completed ie,
LHS should be 1.
cross multiply.
ie
1=2*5.
=10days.
Similarly,
5/8=10.
1= 8/5*10.
= 16.
1/2 work = 5 day
Then,
Getting completed ie,
LHS should be 1.
cross multiply.
ie
1=2*5.
=10days.
Similarly,
5/8=10.
1= 8/5*10.
= 16.
M.v.krishna said:
2 decades 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
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