TIME AND WORK MCQ SET 3
1. A and B , working together , can complete a work in 16 days , C and A together can complete it in 32 days and C and B together can complete it in 24 days . They worked together for 12 days . In how many days will C can complete the remaining work?
(a) 40 days
(b) 36 days
(c) 45 days
(d) 32 days
Answer: B
2. A and B , working together , can complete a work in 10 days , C and A together can complete it in 20 days and C and B together can complete it in 15 days . they worked together for 8 days . In how many days will C can complete the remaining work ?
(a) 12 days
(b) 3 1/5 days
(c) 16 days
(d) 5 1/3 days
Answer: C
3. A can finish a piece of the work in 16 days and B can finish it in 12 days . They worked together for 4 days and then A left . B finished the remaining work . For how many total number of days did B work to Finish the work completely ?
(a) 6
(b) 9
(c) 4
(d) 8
Answer: B
4. X can complete half of the work in 20 days and Y can do one – fifth of the same work in 10 days . X started the work and after 8 days . Then Y took over to complete the remaining work . The total number of days taken by them to complete the work is :
(a) 48 days
(b) 40 days
(c) 60 days
(d) 50 days
Answer: A
5. A can finish a piece of work in 48 days and B can finish it in 60 days . They work together for 12 days and then A goes away . In how much time (in days and hours) will B finish 25% of the remaining work ?
(a) 6 days 4 hours
(b) 8 days 8 hours
(c) 6 days 6 hours
(d) 8 days 6 hours
Answer: D
6. A and B can complete a work in 15 days and 10 days respectively . They started doing the work together but after 4 days B had to leave . Then A working with a new worker C completed the remaining work in 3 days . If C works alone , in how many days he can do 40% of the same work?
(a) 9
(b) 8
(c) 10
(d) 8 1/2
Answer: A
7. A , B and C can do a work in 6 , 8 and 12 days respectively . They begin to work together but A and C leaves after two days . Now B completes the remaining work . The total number of days needed for the completion of the work is :
(a) 4 days
(b) 5 days
(c) 10 days
(d) 15 days
ย Answer: A
8.A can complete a work in 24 days B can complete the same work in 32 days . If they work together and after certain time B left the work and A completed the remaining work . then total work be completed in 18 days . After how many days B days left the work .
(a) 6 days
(b) 8 days
(c) 10 days
(d) 12 days
Answer: B
9.ย can complete a work in 10 days B can complete the same work in 15 days . If they work together and after certain time . A left the work and B completed the remaining work then total work be completed in 9 days . After how many days A left the work .
(a) 6 days
(b) 8 days
(c) 4 days
(d)ย 2 days
Answer: C
10. A , B and C can do a work in 10 , 12 and 15 days respectively . They begin to work together but after certain time B and C left the work and A completed the remaining work then total work will be completed in 7 days . after how many days did B and C left the work .
(a) 4 days
(b) 5 days
(c) 2 days
(d) 7 days
Answer: c
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