Time and Work

1.		Avil and Bimal together can complete a piece of work in 8 days while Bimal and Chandan together can do it in 12 days. All the three together can complete the work in 6 days. In how much time will Avil and Chandan together complete the work?

8 days

10 days

12 days

15 days

2.		A is 50% as efficient as B. C is half as efficient as A and B together. If C alone does the work in 40 days, then A ,B and C together can complete the work in:

13 1/3 days

15 days

16 2/3 days

20 days

3.		10 women can complete a work in 8 days and 10 children take 12 days to complete the same work. Then, 6 women and 3 children together can complete the work in:

9 days

10 days

11 days

12 days

4.		A contractor employed 30 men to do a work in 38 days. After 25 days, he employed 5 more men, and the work was completed one day before the schedule. How many days he would have been behind the schedule,if he had not employed additional men?

13/7 days

8/7 days

2 days

3/2 days

5.		Atul can do a piece of work in 12 days. Bikram can do it in 16 days. Atul started the work alone. After how many days should Bikram join him, so that the work is completed in 9 days?

2 days

3 days

4 days

5 days

6.		Akhil and Bishnu working together completed a job in 5 days. If Akhil worked with twice of his efficiency and Bishnu worked with 1/3 rd of his efficiency, the work would have been completed in 3 days. Akhil alone could complete the work in:

6 days

25/4 days

15/2 days

8 days

7.		A and B together can do a piece of work in 12 days, B and C together in 15 days, C and A together in 20 days. In how many days will they all finish it together?

8

5

10

6

8.		A and B can do a piece of work in 7 days. With the help of C they finish the work in 5 days. C alone can do that piece of work in?

7/2 days

7 days

35/2 days

10 days

9.		Advika and Billy can do a piece of work in 45 days and 40 days respectively. They began the work together but Advika leaves after some days and then Billy completed the remaining work in 23 days. The number of days after which Advika left the work was:

6

8

9

12

10.		12 men can complete a work in 9 days. After they have worked for 6 days, 6 more men joined. Number of days they will take to complete the remaining work:

2 days

3 days

4 days

5 days