Question : A works 3.5 times as fast as B, and A takes 45 days less than B to complete a job when each works alone. Calculate the number of days taken to complete the same job if A and B work together.

Option 1: 10.5

Option 2: 17.5

Option 3: 21

Option 4: 14

Question : A works 5.4 times as fast as B and A takes 22 days less than B to complete the job when each works alone. Calculate the number of days taken to complete the same job if A and B work together.

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

Option 2: $4 \frac{3}{16}$

Option 3: $4 \frac{7}{32}$

Option 4: $4 \frac{5}{32}$

Question : A, B and C can all together do a piece of work in 10 days, in which B takes 3 times as long as A and C together to do the work. In how many days can B alone do the work?

Option 1: 50 days

Option 2: 40 days

Option 3: 10 days

Option 4: 15 days

Question : A and B can do a work together in 18 days. A is three times as efficient as B. In how many days can B alone complete the work?

Option 1: 60 days

Option 2: 72 days

Option 3: 54 days

Option 4: 64 days

Question : A and B together can complete a piece of work in 12 days. They worked together for 5 days and then A alone finished the rest of the work in 14 days. A single person can complete the work in:

Option 1: 24 days

Option 2: 22 days

Option 3: 20 days

Option 4: 18 days

Question : A can complete a piece of work in 14 days, while A and B together can complete it in $3\frac{1}{2}$ days. How long will B alone take to complete it?

Option 1: $4$ days

Option 2: $5$ days

Option 3: $\frac{3}{14}$ days

Option 4: $\frac{14}{3}$ days