Question : A can do a certain task in 1.5 times the number of days in which B and C together can do it. If A and B together can do the task in 30 days, and C alone can do it in 120 days, how many days will B take to do this task alone?

Option 1: 75

Option 2: 45

Option 3: 60

Option 4: 50

Question : If A and B together can do a piece of work in 20 days, and A alone can do the same work in 30 days, in how many days can B alone complete the same work?

Option 1: 45

Option 2: 40

Option 3: 60

Option 4: 50

Question : A can do a piece of work in 10 days and B can do it in 12 days. They work together for 3 days. Then B leaves and A alone continues. 2 days after that C joins and the work is completed in 2 days more. In how many days can C do it, if he works alone?

Option 1: 30 days

Option 2: 50 days

Option 3: 40 days

Option 4: 60 days

Question : Working together, A, B, and C can complete a task in 12 days. A and B can do the task in 55 days and 66 days, respectively, if they work alone. In how many days can C do the task if he works alone?

Option 1: 22

Option 2: 44

Option 3: 20

Option 4: 40

Question : A and B can do a piece of work in 72 days. B and C can do it in 120 days and A and C can do it in 90 days. A alone can do it in:

Option 1: 120 days

Option 2: 130 days

Option 3: 150 days

Option 4: 100 days

Question : A and B together can do a piece of work in 36 days and B and C together can do it in 24 days. A and C together can do it in 18 days. The three working together can finish the work in:

Option 1: 8 days

Option 2: 16 days

Option 3: 30 days

Option 4: 32 days