Question : P, Q, and R can complete a work alone in 12,15, and 20 days respectively. They started the work together. P left the work 8 days before the work was completed and Q left the work 5 days after P had left. R completed the remaining work alone. How many days will be required to complete the whole work?

Option 1: $\frac{32}{3}$ days

Option 2: $10$ days

Option 3: $\frac{28}{3}$ days

Option 4: $\frac{25}{3}$ days

Question : A and B can do a piece of work in 10 days and 15 days, respectively. They worked together, but 5 days before the completion of the work, A left. In how many days was the work completed?

Option 1: 4

Option 2: 8

Option 3: 6

Option 4: 9

Question : A can finish a work in 25 days, and B can do the same work in 15 days. B worked for 10 days and left the job. A alone can finish the remaining work in how many days?

Option 1: $7 \frac{1}{3}$ days

Option 2: $6 \frac{1}{3}$ days

Option 3: $8 \frac{1}{3}$ days

Option 4: $5 \frac{1}{3}$ days

Question : A and B together can complete a work in 20 days. B and C together can complete the same work in 15 days. If A, B, and C all work together, then the same work gets completed in 10 days. How many days will A and C together take to complete the same work?

Option 1: 8 days

Option 2: 10 days

Option 3: 15 days

Option 4: 12 days

Question : A can do a piece of work in 12 days and B can do the same work in 15 days. If both do the work together, then in how many days will the work be completed?

Option 1: $7 \frac{2}{3}$

Option 2: $6 \frac{2}{3}$

Option 3: $5 \frac{2}{3}$

Option 4: $8 \frac{2}{3}$