1) A and B can do a work in 12 days, B and C in 30 days and C and A in 36 days. In how many days will the work be completed, if all three of them work together?

120/11 days

125/14 days

160/11 days

180/13 days

2) 5 men are equal to as many women as are equal to 8 boys. All of them earn Rs.90 only. Menâ€™s wages are?

Rs.5

Rs.4.50

Rs.5.50

Rs.6

3) A, B and C can do a piece of work in 24 days, 30 days and 40 days respectively. They began the work together but C left 4 days before the completion of the work. In how many days was the work completed?

5 days

4 days

7 days

11 days

4) A can do a work in 9 days and B can do the same work in 18 days. If they work together, in how many days will they complete the work?

None of these

6

7

5

8

5) A is half good a work man as B and together they finish a job in 14 days. In how many days working alone B finish the job?

20

22

23

21

6) A can do a piece of work in 20 days. B in 15 days A and C in 12 days. In how many days can A finish the work if he is assisted by B on one day and C on the next, alternately?

10

6

4

8

7) 3 men or 6 women can do a piece of work in 20 days. In how many days will 12 men and 8 women do the same work?

4

5

15/4

7/2

8) If 5 men and 2 boys working together, can do four times as much work per hour as a man and a boy together. Find the ratio of the work done by a man and that of a boy for a given time?

1:2

1:3

3:1

2:1

9) A and B can do a work in 4 hours and 12 hours respectively. A starts the work at 6AM and they work alternately for one hour each. When will the work be completed?

6 days

7 days

4 days

5 days

10) P is three times as fast as Q and working together, they can complete a work in 12 days. In how many days can Q alone complete the work?

20 days

12 days

16 days

17 days

11) 15 men take 21 days of 8 hours each to do a piece of work. How many days of 6 hours each would 21 women take to do the same. If 3 women do as much work as 2 men?

20

30

40

10

12) 45 men working 8 hours per day dig 30 m deep. How many extra men should be put to dig to a depth of 50 m working 6 hours per day?

45

30

55

25

13) Some persons can do a piece of work in 12 days. Two times the number of these people will do half of that work in?

12 days

4 days

6 days

3 days

14) 16 men can complete a piece of work in 25 days. In how many days can 20 men complete that piece of work?

18 days

22 days

20 days

16 days

15) A can do half the work in one day where as B can do it full. B can also do half the work of C in one day. Ratio in their efficiency will be?

2:1:4

2:4:1

1:2:4

4:2:1

16) A, B and C can do a work in 6 days, 8 days and 12 days respectively. In how many days can all three of them working together, complete the work?

2 1/3 days

2 2/3 days

4 2/3 days

1 2/3 days

17) A is twice as good a workman as B and they took 7 days together to do the work B alone can do it in.

27 days

21 days

18 days

12 days

18) Two pipes X and Y can separately fill a cistern in 18 and 24 hours respectively. If they are turned on alternately for one hour each, how long will it take to fill the cistern?

18 hours 30 min

20 hours 30 min

24 hours

16 hours

19) Two men and three women working 7 hours a day finish a work in 5 days. Four men and four women working 3 hours a day complete the work in 7 days. The number of days in which only 7 men working 4 hours a day will finish the work is?

10 days

7 days

5 days

6 days

20) Ramesh can finish a work in 20 days and Sushil in 25 days. They both work together for 5 days and then Sushil goes away. In how many days will Ramesh complete the remaining work?

10 days

11 days

9 days

8 days

21) A can do a piece of work in 12 days. He worked for 15 days and then B completed the remaining work in 10 days. Both of them together will finish it in.

25 days

12 1/2 days

12 days

6 days

22) If 12 men and 16 boys can do a piece of work in 5 days and 13 men together will 24 boys can do it in 4 days. Compare the daily work done by a man with that of a boy.

2:1

2:5

1:2

4:3

23) A, B and C completed a piece of work, A worked for 6 days, B for 9 days and C for 4 days. Their daily wages were in the ratio of 3:4:5. Find the daily wages of C, if their total earning was Rs.1480?

Rs.75

Rs.90

Rs.80

Rs.100

24) Anita, Indu and Geeta can do a piece of work in 18 days, 27 days and 36 days respectively. They start working together. After working for 4 days. Anita goes away and Indu leaves 7 days before the work is finished. Only Geeta remains at work from beginning to end. In how many days was the whole work done?

18 days

19 days

16 days

17 days

25) A and B can do a piece of work in 8 days. B and C can do it in 12 days and A and C in 16 days. Working together they will complete the work in how many days?

12.2 days

7.38 days

14.76 days

9.48 days

26) A, B and C can do a work in 90, 30 and 45 days respectively. If they work together, in how many days will they complete the work?

15

20

None of these

25

10

27) A can do a half of certain work in 70 days and B one third of the same in 35 days. They together will do the whole work in.

120 days

60 days

105 days

420 days

28) A and B can do a work in 5 days and 10 days respectively. A starts the work and B joins him after 2 days. In how many days can they complete the remaining work?

3 days

1 day

2 days

4 days

29) 30 men can do a work in 40 days. When should 20 men leave the work so that the entire work is completed in 40 days after they leave the work?

20 days

15 days

10 days

5 days

30) A can do a piece of work in 4 days. B can do it in 5 days. With the assistance of C they completed the work in 2 days. Find in how many days can C alone do it?

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