**Q1. A completes 7/10 of a work in 15 days. He completes the remaining work with the help of B in 4 days. The time required for A and B together to complete the entire work is:**

**Q2. A man, a woman and a boy can together complete a piece of work in 3 days. If a man alone can do it in 6 days and a boy alone can do it in 18 days, how long will a woman alone take to complete the work?**

(a) 9 days

(b) 21 days

(c) 24 days

(d) 27 days

**Q3. A and B can do a piece of work in 10 days, B and C in 15 days and A and C in 20 days. C alone can do the work in:**

(a) 60 days

(b) 120 days

(c) 80 days

(d) 30 days

**Q4. A does half as much work as B in 1/6 of the time. If together they take 10 days to complete a work, how many days shall B take to do it alone?**

(a) 70 days

(b) 30 days

(c) 40 days

(d) 50 days

**Q5. A can do a piece of work in 4 hours, B and C can do it in 3 hours; A and C can do it in 2 hours. How long will B alone take to do it?**

(a) 10 hours

(b) 12 hours

(c) 8 hours

(d) 24 hours

**Q6. A does 4/5 of a piece of work in 20 days; he then calls in B and they finish the remaining work in 3 days. How long will B alone take to do the whole work?**

(a) 37.5 days

(b) 37 days

(c) 40 days

(d) 23 days

**Q7. A can finish a work in 18 days and B can do the same work in half the time taken by A. Then, working together what part of the same work can they finish in a day?**

(a) 1/6

(b) 2/5

(c) 1/9

(d) 2/7

**Q8. A and B can finish a piece of work in 30 days, B and C can finish it in 15 days while C and A can finish it in 10 days. Time taken by them together to do this work is:**

(a) 5 days

(b) 21/2 days

(c) 71/2 days

(d) 10 days

**Q9. A takes twice as much time as B or thrice as much time as C to finish a piece of work. Working together, they can finish the work in 2 days. B can do the work alone in:**

(a) 12 days

(b) 4 days

(c) 8 days

(d) 6 days

**Q10. A and B can together finish a work in 30 days. They worked together for 20 days and then B left. After another 20 days A finished the remaining work. In how many days can A alone finish the job?**

(a) 50 days

(b) 60 days

(c) 40 days

(d) 65 days

**Q11. If 72 men can build a wall 280m long in 21 days, how many men will take 18 days to build a similar type of wall of length 100 m?**

(a) 30

(b) 10

(c) 18

(d) 28

**Q12. Babu and Asha can do a job together in 7 days. Asha is 7/4 times as efficient as Babu. The same job can be done by Asha alone in:**

(a) 49/4 days

(b) 49/3 days

(c) 11 days

(d) 28/3 days

**Q13. If 3 men or 4 women can plough a field in 43 days, how long will 7 men and 5 women take to plough it?**

(a) 10 days

(b) 11 days

(c) 9 days

(d) 12 days

**Q14. A can finish a work in 24 days, B in 9 days and C in 12 days. B and C start the work but are forced to leave after 3 days. The remaining work is done by A in:**

(a) 5 days

(b) 6 days

(c) 10 days

(d) 10.5 days

**Q15. If 6 persons working 8 hours a day earn Rs. 8400 per week, then 9 persons working 6 hours a day will earn per week:**

(a) Rs. 8400

(b) Rs. 16800

(c) Rs. 9450

(d) Rs. 16200