Time and work questions for the Bob Office Assistant Exam 2025 are an important part of the quantitative qualification section that the candidates have to prepare well to score well. These questions test a candidate’s ability to analyze and solve problems related to work efficiency, time taken by individuals or groups to complete tasks, and their joint efforts. It is necessary to understand the concepts such as work, efficiency and relationship between time and work.
Time and work questions for Bob Office Assistant Exam 2025
Practicing various types of problems on these subjects helps improve the speed and accuracy of the calculation, which is important to clean the competitive Bob Office Supporting Exam 2025. The mastery with time and work questions not only enhances confidence, but also enhances the skill of solving the problem, making it an important field to focus during the exam preparation.
Q1. A is 1.5 times efficient because B and C takes half time compared to A. If A and B takes 2 2/5 days to complete half of the work, find the time taken by A and C together to complete the whole work?
(a) 2 1/3 days
(b) 3 1/3 days
(c) 1 1/3 days
(d) 1 2/3 days
(e) 2 2/3 days
Q2. Two inlet pipes A and B and one outlet pipes in a tank, C, can all simultaneously fill the tank in 5 hours, while the pipe can empty the entire tank alone in 20 hours. Find the time taken by A and B to complete the tank.
(A) 2 hours
(b) 3 hours
(c) 4 hours
(d) 6 hours
(e) 3.5 hours
Q3. 100% more efficient than CB. A alone can complete a piece of work in 9 days and B&C can complete the same work in 2 2/3 days simultaneously. Find out which part of the work will be completed by working together for A&B 4 days.
(A) 13/1 (
(b) 8/9
(c) 5/4
(d) 2/3
(e) 1 (/1 (
Q4. The alone working alone is doing a work and working alone, can complete the same piece of work in 30 days and 18 days respectively. If B started the same work alone and after 6 days a reputed B, then find how many days the work will be completed?
(A) 20 days
(b) 18 days
(c) 24 days
(d) 24 days
(e) 32 days
Q5. Work alone can be completed in 75 days. A started work and left after 36 days, after which B completed the remaining work in 26 days. In how many days B can complete the work alone?
(a) None of these
(b) 50
(c) 4 (
(d) 4
(e) 52
Q6. Pipes – A&B are inlet pipes and pipes – C is an outlet pipe. Pipe – C is connected above 33 1/3% capacity of C tank. Pipe – B is 50% more efficient than B pipe – A and Pipe – 100% more efficient than C pipe – A. If all pipes are opened simultaneously, find out the time taken by all 3 pipes to fill the empty tank.
(a) 8 hours 12 minutes
(b) 7 hours 50 minutes
(c) 9 hours 30 minutes
(d) 8 hours 48 minutes
(E) 7 hours 36 minutes
Q7. Two inlet tap A and B can fill a tank in 36 minutes and 60 minutes respectively. Find the time taken simultaneously by both taps to fill the 1/6th of the tank?
(a) 3 minutes
(b) 3 3/4 minutes
(c) 3 1/2 minutes
(d) 3 1/3 minutes
(e) 2 1/3 minutes
Q8. One can do one thing in a single 12 days while A and B can do that work in 7.5 days simultaneously. Find the time taken by C alone to do that work if C takes 3 days more than B alone to do that work?
(A) 33 days
(b) 30 days
(c) 23 days
(d) 27 days
(e) 2 of days
Q9. 12 women can complete a work in 64 days, then find how many women will be required to complete 2/3 RD of the same work in 16 days?
(A) 2 2 2
(b) 24
(c) 37
(d) 32
(e) ४ (E)
Q10. 12 men can do one thing in 10 days while 10 women can do the same thing in 18 days. How many days can 4 men and 6 women do the same thing together?
(a) 120/7 days
(b) 24 days
(c) 180/13 days
(d) 15 days
(e) 1 e day
Q11. Two pipes A&B individually fill an empty tank in 15 hours and 45 hours respectively. A pipe C can empty the same tank in 30 hours. If all three pipes open together in the tank, in how many hours the tanks will be completely filled?
(A) 24 hours
(b) 18 hours
(c) 14 hours
(d) 12 hours
(e) 20 hours
Q12. Pipe A & Pipe B can fill half of a tank in 7 hours simultaneously, while pipe C can empty 40% of the same tank X hour. When all three pipes open together in the same empty tank, it was completely filled in 26 1/4 hours. Find the value of x?
(A) 1 (
(b) 12
(c) 14
(d) 24
(e)॥
Q13. A can work in 24 days and B can do the same thing in 18 days. If someone starts work alone and after four days B is associated with him, then find how many days the total work will be completed?
(A) 109/7 days
(b) 12 4/7 days
(c) 14 4/7 days
(d) 12 3/7 days
(e) 12 2/7 days
Q14. A and B can simultaneously do 8/15 of one work in 5 days and B can do the remaining work in 7 days alone. Find out how many days can one do one thing?
(A) 15
(b) 25
(c) 12.5
(d) 20
(e) 50
Q15. A and B can simultaneously do a piece of work in 12 days, while B alone took 6 days more than the time taken by A and B alone. Find out a single time alone to complete the work?
(A) 22 days
(b) 30 days
(c) 28 days
(d) 37 days
(e) 25 days
