41.
|
P can complete a work in 12 days working 8
hours a day. Q can complete the same work in 8 days working 10 hours a day.
If both P and Q work together, working 8 hours a day, in how many days can
they complete the work?
|
|
|
42.A can lay railway track between two given
stations in 16 days and B can do the same job in 12 days. With the help of C,
they did the job in 4 days only. Then, C alone can do the job in
A.
9x1/5 days B. 9x2/5 days
C.
9x3/5 days D. 10 days
43..
|
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 these
|
|
|
|
44.Worker A takes 8 hours to do a job. Worker
B takes 10 hours to do the same job. How long should it take both A and B,
working together but indepently, to do the same job?
A.
2x4/9 B. 4x4/9
C.
5x4/9 D. 4x2/9
45.
|
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?
|
|
|
6 days
|
|
10 days
|
|
|
15 days
|
|
20 days
|
|
46.A and B together can complete a work in 12
days. A alone can complete it in 20 days. If B does the work only for half a
day daily, then in how many days A and B together will complete the work?
A. 10
days B.
11 days
C.
15 days D. 20 days
47.
|
A is 30% 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?
|
|
|
11 days
|
|
13 days
|
|
|
|
|
None of these
|
|
48. A
can do a work in 15 days and B in 20 days. If they work on it together for 4
days, then the fraction of the work that is left is
A. 1/4 B.
1/10
C. 7/15 D.
8/15
49.
|
Ravi and Kumar are working on an
assignment. Ravi takes 6 hours to type 32 pages on a computer, while Kumar
takes 5 hours to type 40 pages. How much time will they take, working
together on two different computers to type an assignment of 110 pages?
|
|
|
7 hours 30 minutes
|
|
8 hours
|
|
|
8 hours 15 minutes
|
|
8 hours 25 minutes
|
|
50.A and B together can complete a piece of
work in 4 days. If A alone can complete the same work in 12 days. in how many
days can b alone complete that work?
A. 1/3
days B. 1/6 days
C. 1/9
days D. 1/12 days
