How many days does it take to do the same job?

Originally Answered: A person ‘A’ can do a job in 10 days. Another person ‘B’ can do the same job in 5 days. In how many days will they complete this job if they work together?

How long would it take A and B to finish work together?

A does a tenth of the work in a day, while B does a fifth of the work in a day. Together, they will do 1/10+1/5=3/10 of the work in a day. So, they will require 10/3 days to finish the work together. Anywhere from 1 day to never finishing depending on the two people involved due to synergistic effects.

How long does it take A and B to complete a job?

2) If A and B work together, they will complete a job in 7.5 days. However, if A works alone and completes half the job and then B takes over and completes the remaining half alone, they will be able to complete the job in 20 days. How long will B alone take to do the job if A is more efficient than B?

Can A and B do a piece of work in 14/21 days?

A and B “can” do a piece of work in 14 and 21 days respectively. Question 1: How much of work can be done in parallel. If none, then even though A and B start together, one of them would be idle. Question 2: Who were actually working and when. “Can” do doesn’t imply “were actually doing”. This is the extension of question 1.

How long does it take A and B to complete the work?

But they complete in 2 days, and 2/9 days work of A and B is completed by C. A can do a piece of work in 10 days while B alone can do it in 15 days. They work together for 5 days, and the rest of the work is done by C in 2 days.

How many days does it take C to complete the job?

C = 20 Days to complete the job. But they complete in 2 days, and 2/9 days work of A and B is completed by C. A can do a piece of work in 10 days while B alone can do it in 15 days. They work together for 5 days, and the rest of the work is done by C in 2 days.

How many days would it take to do the work alone?

A does the work in 4 days. So A does 25\% in a day. B does work in 5 days, B does 20\% in a day. In 2 days A and B do 2* (25+20) = 90\% of the work. Remaining work is 10\% for C which C does in 2 days or 5\% per day. Hence C would take 100/5= 20 days to do it alone. Hope you found this useful. A can do a work alone in 4 days.