Aptitude - Chain Rule - Discussion
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Read more:"We cannot solve our problems with the same thinking we used when we created them."
- Albert Einstein
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A man completes  of a job in 10 days. At this rate, how many more days will it takes him to finish the job?
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Answer: Option C
Explanation:
| Balance work = |
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1 - |
5 |
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= |
3 |
| 8 |
8 |
Let the required number of days be x.
| Then, |
5 |
: |
3 |
= :: 10 : x |
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5 |
x x = |
3 |
x 10 |
| 8 |
8 |
8 |
8 |
 x = 6.
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Ranjan said:
(Wed, Oct 20, 2010 12:40:15 AM)
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| Comapare these two No. 5 and 6 please clear me. I don't understand these two question. |
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Shaunak said:
(Sun, Nov 28, 2010 01:42:53 AM)
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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? |
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Mr.Romana said:
(Thu, Jan 27, 2011 06:46:11 AM)
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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 |
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M.V.Krishna said:
(Sat, Mar 19, 2011 06:08:22 AM)
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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 |
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Chandrasekar said:
(Wed, Jun 8, 2011 03:46:18 AM)
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Remaining work is:1-5/8=3/8
I cant understand this step, someone explain ? |
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Mini said:
(Mon, Jul 18, 2011 10:25:17 AM)
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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. |
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Priyanka said:
(Mon, Aug 15, 2011 01:23:12 PM)
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@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 |
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Bhadra said:
(Mon, Aug 15, 2011 04:13:51 PM)
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Very easy
For 5 parts work he takes 10days
for 3 parts ?
3*10/5=6days |
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Avijeet said:
(Sun, Sep 4, 2011 06:28:38 PM)
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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 |
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Chalam said:
(Mon, Dec 26, 2011 04:02:00 PM)
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Bhadra & Avijeet,
Nice explanations.
Thanks |
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