Question : A and B work together to complete the rest of the job in 7 days. However, $\frac{37}{100}$ of the job was already done. Also, the work done by A in 5 days is equal to the work done by B in 4 days. How many days would be required by the fastest worker to complete the entire work?

Option 1: 20

Option 2: 25 

Option 3: 30

Option 4: 10

Question : A and B together can complete a project in 30 days. They started together, but after 6 days, A left the work and the work was completed by B after 36 more days. Single person A can complete the entire work in how many days?

Option 1: 45 days

Option 2: 90 days

Option 3: 60 days

Option 4: 120 days

Question : A can complete a work in 8 days and B can complete the same work in 11 days. How many days will they take, if both work together?

Option 1: $4 \frac{12}{17}$

Option 2: $5 \frac{12}{19}$

Option 3: $4 \frac{11}{19}$

Option 4: $4 \frac{12}{19}$

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 and B together can complete a project in 10 days. They started together, but A left after 2 days and the remaining work was completed by B in 12 days. In how many days can A complete the entire work while working alone?

Option 1: 15 days

Option 2: 20 days

Option 3: 30 days

Option 4: 45 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: $2\frac{7}{8}$