1.  A husband and wife, started painting their house, but husband left painting 5 days before the completion of the work. How many days will it take to complete the work, which the husband alone would have completed in 20 days and wife in 15 days? 
a.   40/7 days 
b.   50/7 days 
c.   75/7 days 
d.   55/7 days


2.  Ketty and Betty together take 12 days to complete a piece of work. Ketty alone can finish the work in 18 days. How long would Betty take to finish the same work? 
a.   28 days 
b.   20 days 
c.   30 days 
d.   36 days


3.  1/4th of a work is completed by 8 persons in 12 days. Find the number of persons required to complete the remaining work in 16 days. 
a.   2 
b.   3 
c.   4 
d.   1


4.  30 men complete a piece of work in 40 days by working 15 hrs a day. Find in how many days 40 men will complete a piece of work by working 10 hrs a day each? 
a.   45 days 
b.   15 days 
c.   30 days 
d.   40 days


5.  "X" can do as much work in 4 days as "Y" in 6 days. "Z" can do as much work in 2 days as "Y" can do in 1 day. What time would "Z" require to do a work if "X" takes 12 days to finish it? 
a.   12 days 
b.   36 days 
c.   24days 
d.   32 days


6.  5 men can complete a piece of work in 4 days, 4 women can complete the same work in 6 days, while 8 children can complete the same work in 5 days. Find in how many days 1 man, 1 woman and 1 child, working togeher can complete the work? 
a.   50/7 days 
b.   60/7 days 
c.   80/7 days 
d.   40/7 days


7.  X and Y can do a piece of work in 15 days; Y and Z can do the job in 18 days; Z and X can complete in 10 days. All of them worked together for 5 days and then X leaves. Y and Z then worked for 3 days and then Y leaves. Find how long Z would take to complete the job? 
a.   43/2 days 
b.   45/2 days 
c.   41/2 days 
d.   47/2 days


8.  Nick and Jose can finish fencing a garden in 15 days, while Nick, Jose and Rose take 10 days to finish. Find the time in which Rose alone can finish the fencing. 
a.   25 days 
b.   20 days 
c.   30 days 
d.   28 days


9.  'X' can do 2/3 of a work in 10 days and 'Y' can do 1/4 of the work in 5 days. Find in how many days can X and Y both together complete the work? 
a.   60/7 days 
b.   50/7 days 
c.   80/7 days 
d.   40/7 days


10.  Bobby can complete a work in 15 days. Rocky is 50% more efficient than Bobby and Rick is 20% more efficient than Rocky. If all of them work together, how long would they take to finish the job? 
a.   2.98 days 
b.   3.56 days 
c.   2.8 days 
d.   3.48 days


11.  A tower was built by 1500 men in 30 days. In how many days can 1800 men build the same tower, if their working hours per day are reduced in the ratio 3:4? 
a.   30 days 
b.   33.33 days 
c.   35 days 
d.   34.34 days


12.  'X' can complete a piece of work in 45 days. He worked on it for 15 days and then 'Y' finished it in 20 days. In how many days can X and Y, together finish the work? 
a.   18 days 
b.   20 days 
c.   22 days 
d.   21 days


13.  Tony is thrice as efficient as Mony. Tony can finish a piece of work in 40 days less than Mony. In how many days, Mony can finish the work? 
a.   120 days 
b.   80 days 
c.   60 days 
d.   90 days


14.  'K' and 'L' can complete a piece of work in 12 days, 'L' and 'N' can do it in 18 days. If 'L' alone takes 30 days to complete the work. Find in what time 'K' and 'N' will do it together? 
a.   13. 666 days 
b.   13.3 days 
c.   13.84 days 
d.   13. 6565 days

