Question : A alone can finish a work in 15 days. A works only for the first two days and the last two days. The rest work is done by B and the work is completed in 20 days. In how many days A and B together can finish the work?

Option 1: $\frac{90}{8}$

Option 2: $\frac{80}{7}$

Option 3: $\frac{80}{9}$

Option 4: $\frac{70}{8}$

Question : A can finish a work in 20 days and B can complete the same work in 15 days. B worked for 9 days and left the job. In how many days can A alone finish the remaining work?

Option 1:  10 days

Option 2: 8 days

Option 3: 9 days

Option 4: 7 days

Question : P, Q, and R can complete a piece of work in 10 days, 15 days, and 20 days, respectively. If they work together, in how many days can they finish the same work?

Option 1: $4\frac{8}{13}$

Option 2: $4\frac{3}{7}$

Option 3: $4\frac{7}{13}$

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

Question : To do certain work, Ajay and Bharat work on alternate days, with Bharat starting the work on the first day. Ajay can finish the work alone in 32 days. If the work gets completed in exactly 8 days, then Bharat alone can finish 7 times the same work in _______ days.

Option 1: $\frac{28}{8}$

Option 2: $4$

Option 3: $\frac{32}{7}$

Option 4: $32$

Question : A and B can finish a work in 10 days, B and C can finish it in 12 days and C and A can finish in 6 days. In how many days A alone can finish the work?

Option 1: $\frac{120}{9}$

Option 2: $12$

Option 3: $\frac{120}{11}$

Option 4: $\frac{121}{12}$

Question : A alone can do a work in 14 days. B alone can do the same work in 28 days. C alone can do the same work in 56 days. They started the work together and completed the work such that B was not working in the last 2 days and A did not work in the last 3 days. In how many days (total) was the work completed?

Option 1: $\frac{82}{7}$ days

Option 2: $\frac{79}{7}$ days

Option 3: $\frac{65}{7}$ days

Option 4: $\frac{72}{7}$ days