Q1 · hard · AI-verified
Working together, A and B can complete a work in 18 days. A alone can complete it in 30 days. If they work together for 9 days and then A leaves, in how many days will B complete the remaining work?
- 15 days
- 12 days
- 18 days
- 21 days
Q2 · hard · AI-verified
A can complete a work in 15 days and B can complete the same work in 20 days. They work together for 6 days, after which A leaves and C joins B. If B and C together complete the remaining work in 4 days, in how many days can C alone complete the entire work?
- 24 days
- 36 days
- 25 days
- 30 days
Q3 · hard · AI-verified
A can do a piece of work in 20 days, B in 30 days. They work together for 5 days, then A leaves and C joins B. B and C together complete the remaining work in 6 days. In how many days can C alone complete the original work?
- 60 days
- 45 days
- 40 days
- 50 days
Q4 · hard · AI-verified
A work can be completed by 36 men in 18 days. How many men should be employed to complete the same work in 12 days?
- 60 men
- 48 men
- 54 men
- 45 men
Q5 · hard · AI-verified
A contractor employed 25 men to complete a work in 40 days. After 10 days, he finds that only 1/8 of the work is completed. How many additional men should he employ to complete the work on time?
- 75 men
- 100 men
- 125 men
- 150 men