Q1 · medium · AI-verified
A piece of work can be completed by A in 18 days, by B in 24 days, and by C in 36 days. A and B work together for 4 days, then A leaves and C joins B. How many more days are needed to complete the remaining work?
- 8 days
- 9 days
- 10 days
- 12 days
Q2 · medium · AI-verified
If 8 men or 12 women can complete a work in 25 days, then in how many days can 6 men and 11 women complete the same work?
- 15 days
- 12 days
- 10 days
- 18 days
Q3 · medium · AI-verified
A can complete a work in 12 days and B can complete the same work in 18 days. If they work together, in how many days will they complete the work?
- 7.2 days
- 8 days
- 6.5 days
- 9 days
Q4 · medium · AI-verified
15 men can complete a piece of work in 20 days. How many men are required to complete the same work in 12 days?
- 30 men
- 20 men
- 18 men
- 25 men
Q5 · medium · AI-verified
A can do a piece of work in 10 days, B in 15 days and C in 20 days. They work together for 2 days, then A leaves. In how many more days will B and C complete the remaining work?
- 6 days
- 7 days
- 8 days
- 9 days