Question : A can do one and a half as much work as B can do in one day. B alone can do a piece of work in 18 days. They together can finish that work in:

Option 1: $10\frac{1}{5}$ days

Option 2: $11\frac{1}{5}$ days

Option 3: $5\frac{1}{5}$ days

Option 4: $7\frac{1}{5}$ days

Question : X and Y together can do a piece of work in 30 days. Z alone can do it in 60 days. If they worked together, then in how many days they can finish the work?

Option 1: 50

Option 2: 25

Option 3: 45

Option 4: 20

Question : A alone can do a work in 16 days and B alone can do the same work in 12 days. If they worked together on it for 4 days and A left. How long did B take to finish the remaining work?

Option 1: 7 days

Option 2: 5 days

Option 3: 6 days

Option 4: 8 days

Question : Kanti and Jiya together can finish a work in 3 days. If Jiya alone can finish the work in 6 days, then in how many days can Kanti alone finish the work?

Option 1: 4 days

Option 2: 6 days

Option 3: 10 days

Option 4: 8 days

Question : A is two times as efficient as B. A can complete a work in 20 days less than B. If both of them work together, then in how many days will the same work be completed?

Option 1: $\frac{40}{3}$ days

Option 2: $\frac{27}{2}$ days

Option 3: 20 days

Option 4: 15 days