Time and Work Aptitude Questions (Chapter-10): Key 100 MCQs for Competitive Exams Practice

A can do a bit of work in 25 days which B can complete in 20 days. Both together labor for 5 days and afterward A leaves off. How long will B take to complete the remaining work?

A and B working together; can do a piece of work in 4.5 hours. B and C working together can do it in 3 hours. C and A working together can do it in 2.25 hours. All of them begin the work at the same time. Find how much time they will take to finish the piece of work.

A can finish a work in 8 hours, B can finish the same work in 12 hours, and C can do it in 24 hours. All the three starts work at 3 am, 4 am, and 5 am respectively. At what time work will be completed?

If A and B together can complete a piece of work in 15 days and B alone in 20 days, in how many days can A alone complete the work ?

A, B, and C work together to complete a project. A can complete the project in 15 days, B can complete it in 20 days, and C can complete it in 25 days. They start working together and complete the project in 8 days. If they are paid a total of INR 4,000 for the project, how much should A receive?

A can finish a work in 24 days, B in 9 days and C in 12 days. B and C start the work but are forced to leave after 3 days. The remaining work was done by A in:

If Anna can paint a house in 8 days, and Mark can paint the same house in 6 days, how long will it take them to paint the house working together?

A and B together can complete a piece of work in 18 days, B and C in 24 days and A and C in 36 days. In how many days, will all of them together complete the work ?

If A and B together can complete a work in 12 days, B and C together in 15 days and C and A together in 20 days, then B alone can complete the work in

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?

A can fabricate a divider in 30 days , while B alone can assemble it in 40 days, If they construct it together and get an installment of RS. 7000, what B's offer?

If Tom can complete a job in 12 hours and Jerry can complete the same job in 9 hours, how long will it take Jerry to complete the job alone if Tom starts but leaves after 3 hours?

A alone can complete a work in 12 days. A and B together can complete it in 8 days. How long will B alone take to complete the work ?

If a team of 5 workers can complete a project in 20 days, how many more workers need to be added to the team to complete the same project in 10 days?

A and B can complete a wall in 15 and 20 hours respectively. If they work together, the wall is completed in 12 hours and they use 280 less bricks. Find the total number of bricks in the wall.

If 2 machines can produce 100 widgets in 5 hours, how many machines are needed to produce 200 widgets in the same amount of time?

If it takes 6 hours for a pump to fill a swimming pool, and it takes 4 hours for another pump to empty the same pool, how long will it take both pumps, working simultaneously, to fill the pool?

A can do a job in 30 days. B alone can do the same job in 20 days. If A starts the work and joined by B after 10 days, in how many days the job will be done?

A contractor undertakes to complete a work in 120 days with the help of 100 workers. After 45 days, he finds that only ¼ of the work has been completed) To complete the remaining work, how many extra workers will be required?

If Alice can complete a job in 8 hours and Bob can complete the same job in 6 hours, how long will it take them to complete the job working together?