A and B working separately can do a piece of work in 9 and 12 days respectively. If they work for a day alternately. If A begins first, in how many days the work will be completed ?

Related Mcqs:

1. A and B can complete a work in 15 days and 10 days respectively. They started doing the work together but after 2 days B had to leave and A alone completed the remaining work. The whole work was completed in___________?

   A. 8 days
   B. 10 days
   C. 12 days
   D. 15 days

2. A can complete a work in 12 days with a working of 8 hours per day. B can complete the same work in 8 days when working 10 hours a day. If A and B work together, working 8 hours a day, the work can be completed in_______days.

   A. 5 5⁄11
   B. 4 5⁄11
   C. 6 4⁄11
   D. 6 5⁄11

3. 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

4. P and Q can complete a work in 15 days and 10 days respectively. They started the work together and then Q left after 2 days. P alone completed the remaining work. The work was finished in__________days.

   A. 12
   B. 15
   C. 22
   D. 20

5. A and B can do a piece of work in 21 and 24 days respectively.They start the work together and after some days, A leaves and B completes the rest of the task in 9 days. After how many days did A leave?

   A. 5
   B. 6
   C. 7
   D. 8

6. P and Q can do a work in 30 days. Q and R can do the same work in 24 days and R and P in 20 days. They started the work together, but Q and R left after 10 days. How many days more will P take to finish the work?

   A. 10
   B. 8
   C. 18
   D. 19

7. Twelve children take sixteen days to complete a work which can be completed by 8 adults in 12 days. After working for 3 days, sixteen adults left and six adults and four children joined them. How many days will they take to complete the remaining work ?

   A. 3 days
   B. 4 days
   C. 6 days
   D. 8 days

   Submitted by: মোঃ আশাদুজ্জামান

8. A,B,C, can do a work in 8,14,16 days respectively. A does the work for the first 2 days. B continues from it and finishes 2/3rd of the remaining work. C finishes the remaining work. How many days would have taken to complete the work?

   A. 13
   B. 11
   C. 12
   D. 15

9. P is able to do a piece of work in 15 days and Q can do the same work in 20 days. If they can work together for 4 days, what is the fraction of work left?

   A. 8/15
   B. 7/15
   C. 11/15
   D. 2/11

10. If X and Y complete a certain work in 10 days, Y and Z in 16 days and X and Z in 22 days, find the time required for each one to complete the work while working separately.

    A. 120, 40, 60 days
    B. 120, 60, 80 days
    C. 40, 30, 120 days
    D. 30, 40, 60 days