Source: safalta.com
a) 25 days
b) 20 days
c) 15 days
d) 10 days
2.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?
a) 9 days
b) 11 days
c) 13 days
d) 15 days
3. 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) 8 hours 15 minutes
b) 8 hours 30 minutes
c) 8 hours 45 minutes
d) 8 hours 20 minutes
4. 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) 2 (2/7) days
b) 3 (3/7) days
c) 5 (5/7) days
d) 4 (4/7) days
5. 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) 16 days
b) 20 days
c) 12 days
d) 18 days
6. A takes twice as much time as B or thrice as much time as C to finish a piece of work. Working together, they can finish the work in 2 days. B can do the work alone in
a) 4 days
b) 6 days
c) 8 days
d) 12 days
7. A and B can complete a work in 15 days and 10 days respectively. They started doing the work together but after 2 days B had to leave and A alone completed the remaining work. The whole work was completed in
a) 8 days
b) 10 days
c) 12 days
d) 16 days
8. A and B can do a piece of work in 30 days, while B and C can do the same work in 24 days and C and A in 20 days. They all work together for 10 days when B and C leave. How many days more will A take to finish the work?
a) 16 days
b) 18 days
c) 24 days
d) 20 days
9. 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 in
a) 4 days
b) 6 days
c) 8 days
d) 12 days
10. Twenty women can do a work in sixteen days. Sixteen men can complete the same work in fifteen days. What is the ratio between the capacity of a man and a woman?
a) 5 : 3
b) 3 : 5
c) 4 : 3
d) 3 : 4