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 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

Question : 30 men can complete a work in 12 days. After 6 days, 24 more men joined them. How many days will it now take to complete the remaining work?

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

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

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

Option 4: $2\frac{1}{3}$ days

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 : Raju, Sunil and Vishal can separately finish a work in 20, 30 and 40 days, respectively. In how many days Raju can finish the work, if he is assisted by Sunil and Vishal on alternate days, starting with Sunil?

Option 1: $12 \frac{3}{5}$

Option 2: $12 \frac{1}{20}$

Option 3: $11 \frac{1}{20}$

Option 4: $11 \frac{3}{5}$