Q1 · hard · AI-verified
A and B together can complete a work in 12 days. B and C together can complete it in 15 days. A and C together can complete it in 20 days. In how many days can A, B and C together complete the work?
- 8 days
- 15 days
- 10 days
- 12 days
Q2 · medium · AI-verified
A pipe can fill a tank in 20 minutes and another pipe can empty it in 30 minutes. If both pipes are opened simultaneously, in how many minutes will the tank be filled?
- 45 minutes
- 40 minutes
- 60 minutes
- 50 minutes
Q3 · medium · AI-verified
Three pipes A, B, and C can fill a tank in 6, 8, and 12 hours respectively. All three are opened together. In how many hours will the tank be full?
- 2.5 hours
- 8/3 hours
- 3 hours
- 4 hours
Q4 · medium · AI-verified
A can complete a work in 12 days and B can complete the same work in 18 days. In how many days will they together complete the work?
- 7.2 days
- 9 days
- 6 days
- 8 days
Q5 · easy · AI-verified
A can complete a work in 10 days and B can complete the same work in 15 days. In how many days can both A and B together complete the work?
- 6 days
- 12 days
- 8 days
- 5 days