Mock Test

Q1. A can complete a work in 30 minutes. B can do it in 40 minutes. C can do it in 50 minutes. How many minutes will it take for them to complete the work together?

Q2. A, B, and C can complete a work in 8, 12, and 16 days respectively. They work together for 4 days. Then A leaves. B and C continue for 3 more days, after which B leaves. C completes the remaining work. If the total wage is Rs. 4800, what is the difference between the wages of A and C?

Q3. If A can complete a work in 10 days, in how many days can A complete 70% of the work?

Q4. If a railway maintenance crew can repair two locomotives in the same amount of time it previously took to repair one, this represents an improvement in:

Q5. A, B, and C can complete a work in 15, 20, and 25 days. They work together for 5 days. Then A leaves. B and C continue, with B working for 3 more days and C for 7 more days. If the work is completed and C's efficiency is 50% of A's, how many days would B alone take to complete the work?

Q6. A can do a work in 10 days. B can do it in 20 days. They work together for 5 days. The remaining work is completed by C in 4 days. In how many days can C alone complete the work?

Q7. A can do a work in 20 days. B can do it in 30 days. C can do it in 40 days. They work together for 8 days. Then B leaves. How many days will A and C take to complete the remaining work?

Q8. A, B, and C can complete a work in 6 days, 8 days, and 12 days respectively. They start working together. After 2 days, A leaves. After 3 more days, B leaves. How many days will C take to complete the remaining work?

Q9. A and B can complete a work in 10 days. B and C can complete the same work in 15 days. C and A can complete the same work in 20 days. In how many days can A, B, and C together complete the work?

Q10. A, B, and C can complete a work in 8, 10, and 12 days respectively. They start working together. After 3 days, A leaves. After 3 days of A leaving, B also leaves. In how many days will C complete the remaining work?

Q11. C alone can do a work in 20 days. What is the work done by C in 10 days?

Q12. A, B, and C can complete a work in 12, 15, and 20 machine-days respectively. They start the work together. After 4 machine-days, A leaves. In how many machine-days will the remaining work be completed by B and C?

Q13. A can complete a work in 20 days. B can complete the same work in 30 days. They work together for 10 days. Then A leaves. In how many days will B complete the remaining work?

Q14. A, B, and C can complete a task in 8 minutes. A alone can do it in 20 minutes. B alone can do it in 30 minutes. If they work together for 5 minutes, how much work is left?

Q15. A can complete a work in 5 days. B can complete it in 7 days. If they work together, how many days will it take to complete 3/4 of the work?

Q16. A can do a work in 15 days. B can do it in 20 days. They work together for 4 days. Then A leaves. In how many days will B finish the remaining work?

Q17. A, B, and C can complete a task in 10, 12, 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 time, what is the total time taken to complete the task?

Q18. A can do a work in 15 days. B can do it in 20 days. They start working together. After 4 days, B leaves. In how many days will A complete the remaining work?

Q19. A, B, and C can complete a work in 15, 20, and 30 seconds respectively. They start working together. After 5 seconds, A leaves. B and C work together for the next 10 seconds. If B leaves after these 10 seconds, how many seconds will C take to complete the remaining work?

Q20. A, B, and C can complete a work in 8, 12, and 15 days respectively. They start working together. A works for 2 days and leaves. Then B and C work together for 3 days, after which C leaves. In how many days can B alone complete the remaining work?