1. A, B and C can complete a piece of work in 24, 6 and 12 days respectively. Working together, they will complete the same work in:

1/24 day
7/24 day
3 3/7 days
4 days
None of the above

Solution:
2. P, Q and R are three typists who working simultaneously can type 216 pages in 4 hours. In one hour, R can type as many pages more than Q as Q can type more than P. During a period of five hours, R can type as many pages as P can during seven hours. How many pages does each of them type per hour?
14, 17, 20
15, 17, 22
15, 18, 21
16, 18, 22
None of the above

Solution:
3. 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:
4 days
6 days
8 days
12 days
None of the above

Solution:
4. A works twice as fast as B. If B can complete a work in 12 days independently, the number of days in which A and B can together finish the work is:
4 days
6 days
8 days
18 days
None of the above

Solution:
5. A and B can do a job together in 7 days. A is 1 3/4 times as efficient as B. the same job can be done by A alone in:
9 1/3 days
11 days
12 1/4 days
16 1/3 days
None of the above

Solution:
6. A machine P can print one lakh books in 8 hours, machine Q can print the same number of books in 10 hours while machine R can print them in 12 hours. All the machines are started at 9 a.m. while machine P is closed at 11 a.m. and the remaining two machines complete the work. Approximately at what time will the work be finished?
11:30 a.m.
12 noon
12:30 p.m.
1 p.m.
None of the above

Solution:
7. A and B together can do a piece of work in 12 days, which B and C together can do in 16 days. After A has been working at it for 5 days and B for 7 days, C finished it in 13 days. In how many days C alone will do the work?
16
24
36
48
None of the above

Solution:
8. A, B and C can do a piece of work in 36, 54 and 72 days respectively. Then started the work but A left 8 days before the completion of the work while B left 12 days before the completion. The number of days for which C worked is:
4
8
12
24
None of the above

Solution:
9. 10 women can complete a work in 7 days and 10 children take 14 days to complete the work. How many days will 5 women and 10 children take to complete the work?
3
5
7
Cannot be determined
None of the above

Solution:
10. If 12 men and 16 boys can do a piece of work in 5 days; 13 men and 24 boys can do it in 4 days, then the ratio of daily work done by a man to that of a boy is:
2 : 1
3 : 1
3 : 2
5 : 4
None of the above
Solution: