Mock Test

Q1. A can do a piece of work in 5 days. B can do the same work in 10 days. What fraction of the work can they complete together in 1 day?

Q2. B can complete a work in 25 days. What is the work done by B in 5 days?

Q3. A, B, and C can complete a work in 10 days. If A and B together can do it in 15 days, in how many days can B and C together do the work if A does the work in 30 days?

Q4. A and B can complete a work in 10 days. C joins them and they complete it in 7.5 days. If they use a new painting technique that requires 10% less application time but A works with 15% less efficiency due to a faulty brush, how many days will it take to complete the work?

Q5. A, B, and C can complete a work in 12, 16, and 20 days respectively. They start together. A works for 4 days and leaves. B works for the next 6 days and leaves. C completes the remaining work. If the total wage earned is Rs. 7200, what is the share of B?

Q6. A can do a work in 8 days. B can do it in 12 days. C can do it in 16 days. They work together for 3 days. What fraction of the work is completed?

Q7. A, B, and C can complete a work in 12, 18, and 24 days respectively. They work together. A works for x days, B works for y days, and C works for z days. If A works twice as many days as B, and C works for 1.5 times the days B works, and the total work is completed, what is the ratio of work done by A, B, and C?

Q8. If A and B together can complete a work in 8 days, and A alone can complete it in 12 days, then B alone can complete it in:

Q9. A, B, and C can complete a work in 6, 8, and 12 hours respectively. If A and B work together for 4 hours, and then C joins them, in how many hours will they complete the remaining work?

Q10. A, B, and C can complete a task in 8, 10, and 15 machine-seconds respectively. If A works for 5 machine-seconds, then B works for 5 machine-seconds, and then C works for the remaining part, what fraction of the work is done by C?

Q11. A, B, and C can complete a work in 8, 10, and 12 days respectively. They start working together. After 2 days, A leaves. Then B and C work together for 3 days. After that, B leaves, and C completes the remaining work. If the total work done by A is 1/4 of the total work, in how many days did C work?

Q12. A can do a work in 30 days. B can do it in 45 days. C can do it in 60 days. If they work together, how many days will it take to complete the work?

Q13. A takes 10 minutes to complete a task. B takes 15 minutes to complete the same task. How much work do they complete together in 1 minute?

Q14. A, B, and C can complete a work in 10 days. If A and B together can complete the work in 15 days, in how many days can C alone complete the work?

Q15. Which of the following is a common indicator of inefficiency in a work process?

Q16. Work done is a measure of energy transfer. Its unit is:

Q17. A can do a work in 24 days. B can do it in 36 days. They work together for 6 days. Then B leaves. In how many days will A complete the remaining work?

Q18. B completes 5% of a work in a day. C completes 20% of the work in a day. What percentage of work do they complete together in a day?

Q19. A, B, and C can do a job in 20, 25, and 30 machine-days. They work together. If A works for 50% of the time, B works for 60% of the time, and C works for 75% of the time, and the work done is 82.5%, in how many machine-days was the job completed?

Q20. A, B, and C can complete a work in 18, 24, and 36 hours respectively. They start working together. A works for the entire duration. B works for 1/3 of the total time. C works for 1/2 of the time B worked. If the total work done is equivalent to completing 75% of the original work, in how many hours was the work completed?