Time and Work

1.		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

2.		7 men undertook a work to be completed in 12 days. They started the work and after 5 days, two men left. The remaining work will now be completed in:

6

7

8

None of these

3.		Advert and Bill can together finish a work in 30 days. They worked together for 20 days and then Bill left. After another 20 days, Advert finished the remaining work. In how many days Advert alone can finish the work?

40

45

54

60

4.		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

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.		A alone can do a piece of work in 3 days while B alone can do the same work in 2 days. If they work together to complete the work, their total wages is fixed Rs. 450. Find the share of A.

Rs. 180

Rs. 150

Rs. 190

Rs. 140

7.		Advik and Billu can do a piece of work in 25 days and 20 days respectively. They began the work together but Advik leaves after some days and then Billu completed the remaining work in 11 days. The number of days after which Advik left the work was:

9

7

6

5

8.		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

9.		Amit and Bishnu can do a piece of work in 12 days and 16 days respectively. Both work together for 3 days and then Amit left. How long will Bishnu take to complete the remaining work?

15 days

12 days

10 days

9 days

10.		Asim is 20% more efficient than Beer, who can complete a work in 72 days. If they are work together, in how many days the work can be completed?

30 days

336/11 days

360/11 days

368/11 days