A. 15
B. 16
C. 18
D. 25
Answer: B
3. A can do a piece of work in 4 hours; B and C together can do it in 3 hours, which A and C together can do it in 2 hours. How long will B alone take to do it?
A. 8 hours
B. 10 hours
C. 12 hours
D. 24 hours
Answer: C
4. A and B can do a work in 8 days, B and C can do the same work in 12 days. A, B and C together can finish it in 6 days. A and C together will do it in?
A. 4 days
B. 6 days
C. 8 days
D. 12 days
Answer: C
5. A and B can do a work in 12 days, B and C in 15 days, C and A in 20 days. If A, B and C work together, they will complete the work in?
A. 5 days
B. days
C. 10 days
D. days
Answer: C
6. A is more efficient than B. How much time will they, working together, take to complete a job which A alone could have done in 23 days?
A. 11 days
B. 13 days
C. days
D. None of these
Answer: B
7. A can finish a work in 18 days B can do the same work in 15 days. B worked for 10 days and left the job. In how many days, A alone can finish the remaining work?
A. 5
B.
C. 6
D. 8
Answer: C
8. 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
Answer: B
9. A can do a price of work in 30days while B can do it in 40 days. In how many days can A and B working together do it?
A. 70 Days
B. days
C. days
D. days
Answer: D
10. A and B can together do a price of work in 15 days. B alone can do it in 20 days. In how many days can A alone do it?
A. 30 days
B. 40 days
C. 45 days
D. 60days
Answer: D
11. A can do of a work in 5 days and B can do of the work in 10 days. In how many days both A and B together can do the work?
A.
B.
C.
D. 10
Answer: C
12. A, B and C contract a work for Rs. 550. Together A and B are to do of the work. The share of C should be?
A. Rs.183
B. Rs.200
C. Rs. 300
D. Rs.400
Answer: B
13. A can do a piece of work in 80 days. He works at it for 10 days and then B alone finishes the work in 42 days. The Two together could complete the work in?
A. 24 days
B. 25 days
C. 30 days
D. 35 days
Answer: C
14. Mahesh and Umesh can complete a work in 10 days and 15 days respectively. Umesh starts the work and after 5 days Mahesh also joins him in all the work would be completed in
A. 7 days
B. 9days
C. 11 days
D. None of these
Answer: B
15. Twelve men can complete a work in 8 days. Three days after they started the work, 3 more men joined them. In how many days will all of them together complete remaining work?
A. 2
B. 4
C. 5
D. 6
Answer: B
16. A can do a piece of work in 10 days and B can do the same piece of work in 20 days. They start the work together but after 5 days. A leaves off B will do the remaining piece of work in?
A. 5 days
B. 6 days
C. 8days
D. 10days
Answer: A
17. A and B can together finish a work in 30 days. They worked for it for 20 days and then B left. The remaining work was done by A alone in 20 more days. Alone can finish the work in?
A. 48 days
B. 50days
C. 54 days
D. 60 days
Answer: D
18. A can complete a job in 9 days. B in 10 days and C in 15 days. B and C start the work and are forced to leave after 2 days. The time taken to complete the remaining work is?
A. 6 days
B. 9 days
C. 10 days
D. 13 days
Answer: A
19. A, B and C together earn Rs.150 per day while A and C together earn Rs. 94 and B and C together earn Rs. 76. The daily earning of C is?
A. Rs. 75
B. Rs.56
C. Rs. 34
D. Rs.20
Answer: D
20. A can do a certain job in 12 days. B is 60% more efficient than A. Then Number of days it takes B to do the same piece of work is?
A. 6
B.
C.
D. 8
Answer: C