how to solve time and work problems - Wikitechy https://www.wikitechy.com/interview-questions/tag/how-to-solve-time-and-work-problems/ Interview Questions Mon, 06 Sep 2021 05:19:48 +0000 en-US hourly 1 https://wordpress.org/?v=6.9 https://www.wikitechy.com/interview-questions/wp-content/uploads/2025/10/cropped-wikitechy-icon-32x32.png how to solve time and work problems - Wikitechy https://www.wikitechy.com/interview-questions/tag/how-to-solve-time-and-work-problems/ 32 32 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 ? https://www.wikitechy.com/interview-questions/time-and-work/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/ https://www.wikitechy.com/interview-questions/time-and-work/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/#respond Wed, 18 Aug 2021 03:08:04 +0000 https://www.wikitechy.com/interview-questions/?p=2090

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. 18

B. 12

C. 15

D. 14

Answer : C. 15

Explanation:

A’s 2 day’s work = 1/20 x 2
= 1/10
(A + B + C) 1 day’s Work = (1/20 + 1/30 + 1/60)
= 6/60
= 1/10
Now,
Work done in 3 days = (1/10) + (1/10)
= 1/5
Now 1/5 work is done in 3 days.
Now whole work will be done in 3 * 5 = 15 days.

]]> https://www.wikitechy.com/interview-questions/time-and-work/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/feed/ 0 Babla alone can do a piece of work in 10 days ashu alone can do it in 15 days. The total wages for the work in Rs.5000. How much should babla be paid of they work together for entire duration of the work ? https://www.wikitechy.com/interview-questions/time-and-work/babla-alone-can-do-a-piece-of-work-in-10-days-ashu-alone-can-do-it-in-15-days-the-total-wages-for-the-work-in-rs-5000-how-much-should-babla-be-paid-of-they-work-together-for-entire-duration-of-the-w/ https://www.wikitechy.com/interview-questions/time-and-work/babla-alone-can-do-a-piece-of-work-in-10-days-ashu-alone-can-do-it-in-15-days-the-total-wages-for-the-work-in-rs-5000-how-much-should-babla-be-paid-of-they-work-together-for-entire-duration-of-the-w/#respond Wed, 18 Aug 2021 03:06:59 +0000 https://www.wikitechy.com/interview-questions/?p=2089

Babla alone can do a piece of work in 10 days ashu alone can do it in 15 days. The total wages for the work in Rs.5000. How much should babla be paid if they work together for entire duration of the work ?

A. 4000

B. 3000

C. 5000

D. 2000

Answer : B. 3000

Explanation 1:

Babla work = 1/10
Ashu work = 1/15
Total work = 1/10 + 1/15
= 5/30
= 6 days.

Total amount to be paid for Babla = 6/10 * 5000
= 3000

Explanation 2:

Money should always be divided in the inversely proportion way.
So Babla will get money = 15 / (15 + 10) × 5000
= 3000

]]> https://www.wikitechy.com/interview-questions/time-and-work/babla-alone-can-do-a-piece-of-work-in-10-days-ashu-alone-can-do-it-in-15-days-the-total-wages-for-the-work-in-rs-5000-how-much-should-babla-be-paid-of-they-work-together-for-entire-duration-of-the-w/feed/ 0 Jake can dig a well in 16 days. Paul can dig the same well in 24 days. Jake, Paul and Hari together dig the well in 8 days. Hari alone can dig the well in ? https://www.wikitechy.com/interview-questions/time-and-work/jake-can-dig-a-well-in-16-days-paul-can-dig-the-same-well-in-24-days-jake-paul-and-hari-together-dig-the-well-in-8-days-hari-alone-can-dig-the-well-in/ https://www.wikitechy.com/interview-questions/time-and-work/jake-can-dig-a-well-in-16-days-paul-can-dig-the-same-well-in-24-days-jake-paul-and-hari-together-dig-the-well-in-8-days-hari-alone-can-dig-the-well-in/#respond Wed, 18 Aug 2021 03:01:27 +0000 https://www.wikitechy.com/interview-questions/?p=2086

Jake can dig a well in 16 days. Paul can dig the same well in 24 days. Jake, Paul and Hari together dig the well in 8 days. Hari alone can dig the well in ?

A. 48

B. 96

C. 24

D. 32

Answer : A. 48

Explanation:

As Jake , Paul and Hari can dig the well in 8 days,
Jack one day work = 1/16
Paul one day work = 1/24
Hari one day work = 1/x

Given,
(Jake, Paul and hari) 1 day work = 1/8

So, 1/16 + 1/24 + 1/x = 1/8
5/48 + 1/x = 1/8
1/x = 1/8 – 5/48
1/x = (6 – 5) / 48
= 1/48
1/x = 1/48

Therefore, Paul can finished work in 48 days.

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