Q1 · medium · AI-verified
A and B together can complete a work in 12 days. A alone can complete the same work in 20 days. In how many days can B alone complete the work?
- 30 days
- 25 days
- 28 days
- 24 days
Q2 · medium · AI-verified
Three pipes A, B, and C can fill a tank in 6, 8, and 12 hours respectively. If all three pipes are opened together, in how much time will the tank be filled?
- 8/3 hours
- 3 hours
- 7/2 hours
- 5/2 hours
Q3 · medium · AI-verified
A works twice as fast as B. If together they can complete a work in 18 days, how many days will A alone take to complete the work?
- 27 days
- 24 days
- 30 days
- 36 days
Q4 · medium · AI-verified
A squadron can complete a training mission in 12 days. Another squadron can complete the same mission in 18 days. If both squadrons work together, in how many days can they complete the mission?
- 9 days
- 8 days
- 6.5 days
- 7.2 days
Q5 · medium · AI-verified
A tap can fill a cistern in 4 hours. Due to a leak at the bottom, it takes 6 hours to fill the cistern. In how much time can the leak empty the full cistern?
- 12 hours
- 10 hours
- 8 hours
- 15 hours