Question : A can do $\frac{2}{5}$ of a work in 12 days while B can do $66\frac{2}{3}\mathrm{\%}$ of the same work in 16 days. They work together for 10 days. B alone will complete the remaining work in:

Option 1: 6 days

Option 2: 4 days

Option 3: 8 days

Option 4: 9 days

Question : A can do $\frac{2}{5}$ of a work in 6 days and B can do $\frac{2}{3}$ of the same work in 12 days. A and B worked together for 6 days. C alone completed the remaining work in 8 days. A and C, working together, will complete the same work in:

Option 1: 9 days

Option 2: 12 days

Option 3: 10 days

Option 4: 8 days

Question : A can do $\frac{4}{5}$th of a work in 20 days and B can do $\frac{3}{4}$th of the same work in 15 days. They work together for 10 days. C alone completes the remaining work in 1 day. B and C together can complete $\frac{3}{4}$th of the same work in:

Option 1: 6 days

Option 2: 8 days

Option 3: 5 days

Option 4: 4 days

Question : A can do a piece of work in 10 days, while A and B together can complete it in $2\frac{1}{2}$ days. How long will B alone take to complete the work?

Option 1: $\frac{3}{10}$ days

Option 2: $\frac{10}{3}$ days

Option 3: $3$ days

Option 4: $4$ days

Question : A can complete $\frac{2}{3}$ of a work in 4 days and B can complete $\frac{3}{5}$ of the work in 6 days. In how many days can both A and B together complete the work?

Option 1: $3$

Option 2: $2$

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

Option 4: $2\frac{7}{8}$

Question : A and B together can do a certain work in $x$ days. Working alone, A and B can do the same work in ($x$ + 8) and ($x$ + 18) days, respectively. A and B together will complete $\frac{5}{6}$th of the same work in:

Option 1: 12 days

Option 2: 8 days

Option 3: 10 days

Option 4: 9 days