11.
|
A is thrice as good as workman as B and
therefore is able to finish a job in 60 days less than B. Working together,
they can do it in:
|
|
|
12.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?
A. 7 hours 30 minutes
B. 8 hours
C. 8 hours 15 minutes
D. 8 hours 25 minutes
View Answer With Explanation
13.5 men and 2 boys working together can do
four times as much work as a man and a boy. Working capacities of a woman and a
boy are in the ratio
A. 1 :
2 B. 1 : 3
C. 2 :
1 D. 3 : 1
14.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 :
A. 1/24 days
B. 7/24 days
C. 24/7 days
D. 4 days
15.
|
A alone can do a piece of work in 6 days
and B alone in 8 days. A and B undertook to do it for Rs. 3200. With the help
of C, they completed the work in 3 days. How much is to be paid to C?
|
|
|
Rs. 375
|
|
Rs. 400
|
|
|
Rs. 600
|
|
Rs. 800
|
|
16.Sakshi can do a piece of work in 20 days.
Tanya is 25% more efficient than Sakshi. The number of days taken by Tanya to
do the same piece of work is:
A. 15
B. 16
C. 18
D. 25
View Answer With Explanation
17.A man can do a job in 15 days. His father
takes 20 days and his son finishes it in 25 days. How long will they take to
complete the job if they all work together?
A. Less
than 6 days B. exactly 6 days
C.
appro. 6.4 days D. more than 10 days
18..A, B and C can do a piece of work in 20,
30 and 60 days respectively. In how many days can A do the work if he is
assisted by B and C on every third day?
A. 12 days
B. 15 days
C. 16 days
D. 18 days
View Answer With Explanation
19.
|
If 6 men and 8 boys can do a piece of work
in 10 days while 26 men and 48 boys can do the same in 2 days, the time taken
by 15 men and 20 boys in doing the same type of work will be:
|
|
|
4 days
|
|
5 days
|
|
|
6 days
|
|
7 days
|
|
20.A tyre has punctures. The first puncture
alone would have made the tyre flat in 9 minutes and the second alone would
have done it in 6 minutes. If air leaks out at a constant rate, how long does
it take both the punctures together to make it flat?
A.
1x1/2 minutes B. 3x1/2 minutes
C.
3x3/5 minutes D.
4x1/4 minutes
