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# Problem on Time and Work

Discuss Problem on Time and Work within the Quant forums, part of the CAT, XAT, MAT, CET, JMET and other Indian MBA Entrance Exams category; A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many ...

 Problem on Time and Work
Tarun Bhardwaj

Student of MBA at DU
Delhi, Delhi

Institute: DU
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Join Date: Dec 2009
Location: Delhi, Delhi
Problem on Time and Work - July 17th, 2013

A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day?

A. 12 days
B. 15 days
C. 16 days
D. 18 days

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 (2 (permalink)) Tarun Bhardwaj   Student of MBA at DU Delhi, Delhi Management Paradise Newbie  Institute: DU Status: Offline Posts: 127 Join Date: Dec 2009 Location: Delhi, Delhi Re: Problem on Time and Work - July 18th, 2013 4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can complete it in 10 days. In how many days will 10 women complete it? A. 35 B. 40 C. 45 D. 50 To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Friends: (1)
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 (3 (permalink)) Tarun Bhardwaj   Student of MBA at DU Delhi, Delhi Management Paradise Newbie  Institute: DU Status: Offline Posts: 127 Join Date: Dec 2009 Location: Delhi, Delhi Re: Problem on Time and Work - July 19th, 2013 A can do a certain work in the same time in which B and C together can do it. If A and B together could do it in 10 days and C alone in 50 days, then B alone could do it in: A. 15 days B. 20 days C. 25 days D. 30 days To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Friends: (1)
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 (4 (permalink)) Tarun Bhardwaj   Student of MBA at DU Delhi, Delhi Management Paradise Newbie  Institute: DU Status: Offline Posts: 127 Join Date: Dec 2009 Location: Delhi, Delhi Re: Problem on Time and Work - July 21st, 2013 A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day? A. 12 days B. 15 days C. 16 days D. 18 days To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Friends: (1)
Jiten Mazee

Student of Bachelor of Engineering at HAKIM ABDUL HAMID UNANI MEDICAL COLLEGE

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Posts: 2,649
Join Date: Oct 2015
January 12th, 2016

Quote:
 Originally Posted by tarunceo A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day? A. 12 days B. 15 days C. 16 days D. 18 days
The right answer is option B.

Explanation :

A's 2 day's work = [1/20 * 2] = 1/10
(A + B + C)'s 1 day's work = [1/20 + 1/30 + 1/60] = 1/10
Work done in 3 days = [1/10 + 1/10] = 1/5
Now, 1/5 work is done in 3 days.
Whole work will be done in (3 x 5) = 15 days.

10 women can complete a work in 7 days and 10 children take 14 days to complete the work. How many days will 5 women and 10 children take to complete the work?
A. 3
B. 5
C. 7
D. Cannot be determined
E. None of these

X and Y can do a piece of work in 20 days and 12 days respectively. X started the work alone and then after 4 days Y joined him till the completion of the work. How long did the work last?
A. 6 days
B. 10 days
C. 15 days
D. 20 days

Ravi and Kumar are working on an assignment. Ravi takes 6 hours to type 32 pages on a computer, while Kumar takes 5 hours to type 40 pages. How much time will they take, working together on two different computers to type an assignment of 110 pages?

A. 7 hours 30 minutes
B. 8 hours
C. 8 hours 15 minutes
D. 8 hours 25 minutes

Sakshi can do a piece of work in 20 days. Tanya is 25%u0025 more efficient than Sakshi. The number of days taken by Tanya to do the same piece of work is:

A. 15
B. 16
C. 18
D. 25

Last edited by kartik; January 20th, 2016 at 06:52 PM..

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