Question : Amar can complete a work in 15 days and Prem in 12 days. Starting with Amar, they work on alternate days. In how many days will the work be completed?

Option 1: $13\frac{2}{5}$

Option 2: $12\frac{1}{6}$

Option 3: $13\frac{1}{2}$

Option 4: $13$

Question : 15 men can complete a work in 25 days and 25 women can complete the same work in 40 days. If all the 15 men and 25 women work together, in how many days will the work get completed?

Option 1: $15\frac{5}{13}$ days

Option 2: $10\frac{5}{13}$ days

Option 3: $15\frac{5}{12}$ days

Option 4: $15\frac{4}{13}$ days

Question : Rekha alone can complete a task in 16 days and Bina alone can complete the same task in 12 days. Starting with Rekha, they work on alternate days. The task will be completed in:

Option 1: $12\frac{3}{4}\text{days}$

Option 2: $12\text{days}$

Option 3: $13\text{days}$

Option 4: $13\frac{3}{4}\text{days}$

Question : A can complete a task in 25 days while B can complete the same task in 30 days. They work on alternate days, starting with A. Both A and B follow this pattern for 5 days and then, A leaves. In how many days will B finish the remaining work?

Option 1: $24\frac{2}{5}$

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

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

Option 4: $24\frac{3}{5}$

Question : A and B alone can do a piece of work in 4 and 9 days, respectively. In how many days will the work be completed, if they both work on alternate days, starting with B?

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

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

Option 3: $5$

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

Question : A can do a task in 8 days, while B can do it in 18 days. In how many days will the work be completed if they both work on alternate days, starting with B?

Option 1: $11\frac{1}{3}$ days

Option 2: $12\frac{1}{3}$ days

Option 3: $10$ days

Option 4: $10\frac{1}{3}$ days