Q1. A, B and C can complete a piece of work in 10, 15 and 18 days respectively. In how many days, would all of them complete the same work working together?
(a) 9/2
(b) 9/5
(c) 4/3
(d) 3
Q2. A and B can do a piece of work in 12 days, B and C in 15 days, C and A in 20 days. How long would each of them would take separately to complete the same work?
(a) 30 days, 30days & 65days
(b) 30 days, 20days & 60days
(c) 35 days, 25days & 60days
(d) 15 days, 25days & 65days
Q3. Harbans Lal can do a piece of work in 24 days. If Bansi Lal works twice as fast as Harbans Lal, then how long would they take to complete the work working together?
(a) 8 days
(b) 12 days
(c) 6 days
(d) 4 days
Q4. A and B together can do a piece of work in 3 days. If A does thrice as much work as B in a given time, find, how long A alone would take to do the work?
(a) 5 days
(b) 2 days
(c) 3 days
(d) 4 days
Q5. A alone would take 8 hours more to complete the job than if both A and B worked together. If B worked alone, he took 9/2 hours more to complete the job than A and B worked together. What time would they take if both A and B worked together?
(a) 7 days
(b) 2 days
(c) 6 days
(d) 8 days
Q6. A is thrice as a good a workman as B and takes 10 days less to complete a piece of work than B takes. Find out time in which B alone can complete the work.
(a) 15 days
(b) 5 days
(c) 14 days
(d) 21 days
Q7. A complete 3/4 of a work in 12 days. In how many days he would complete 1/8 of the work?
(a) 3
(b) 2
(c) 1
(d) 4
Q8. If 10 persons can complete 2/5 of a work in 8 days, then find out the number of persons required to complete the remaining work in 12 days.
(a) 12
(b) 11
(c) 9
(d) 10
Q9. If 10 persons can cut 20 trees in 3 days by working 12 hours a day. Then, in how many days can 24 persons cut 32 trees by working 4 hours a day?
(a) 6
(b) 5
(c) 7
(d) 8
Q10. 12 men or 15 women can do a work in 14 days in how many days, 7 men and 5 women would complete the work?
(a) 178/13
(b) 16
(c) 147/12
(d) 168/11
Q11. Bansal, Gupta and Singhal together can complete a work in 4 days. If Bansal and Gupta together can complete the work in 24/5 days, Gupta and Singhal together can do it in 8 days, then Gupta alone can complete the work in:
(a) 16 days
(b) 12 days
(c) 20 days
(d) None of these
Q12. 4 men or 6 women can finish a piece of work in 20 days. In how many days can 6 men and 11 women finish the same work?
(a) 9 days
(b) 6 days
(c) 7 days
(d) None of these
Q13. Five men and 2 boys, working together, can complete four times as much work per hour as a man and a boy completes working together. The work completed by a man and a boy should be in the ratio:
(a) 1: 2
(b) 2: 1
(c) 1: 3
(d) 4: 1
Q14. A and B, working together, can complete a piece of work in 12 days B and C working together can complete the same piece of work in 16 days. A worked at it for 5 days and B worked at it for 7 days. C finished the remaining work in 13 days. How many days would C alone take to complete it?
(a) 10 days
(b) 24 days
(c) 32 days
(d) 40 days
Q15. A can do a piece of work in 30 days, B in 50 days and C in 40 days. If A assisted by B on one day and by C on the next day alternately, the work will be completed in:
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