Question : Working together, A and B can do a job in 40 days, B and C in 36 days, and all three together in 24 days. In how many days can B alone do the job?

Option 1: 60

Option 2: 90

Option 3: 72

Option 4: 120

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

Question : A and B together can finish a job in 24 days, while A, B, and C together can finish the same job in 8 days. C alone will finish the job in:

Option 1: 12 days

Option 2: 14 days

Option 3: 16 days

Option 4: 24 days

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, B, and C can do a job working alone in 50, 75 and 20 days, respectively. They all work together for 4 days, then C quits. How many days will A and B take to finish the rest of the job?

Option 1: 20

Option 2: 30

Option 3: 18

Option 4: 24

Question : A and B together can do a job in 15 days and A alone could do the same job in 20 days. How many days would B take to do half the job if he worked alone?

Option 1: 60

Option 2: 30

Option 3: 45

Option 4: 40