Question : A can do a certain work in 9 days. B is 80% more efficient than A. How many days will B and A together take to do the same work?

Option 1: $\frac{45}{14}$ Days

Option 2: $\frac{54}{13}$ Days

Option 3: $\frac{47}{14}$ Days

Option 4: $\frac{44}{13}$ Days

Question : 12 men can do work in 8 days while 4 boys can do it in 40 days. In how many days 9 boys and 3 men together will complete the same work?

Option 1: 10 days

Option 2: $\frac{280}{13}$ days

Option 3: $\frac{80}{7}$ days

Option 4: $\frac{260}{17}$ days

Question : 30 women working 5 hours a day can complete a work in 18 days, In how many days will 21 women working 8 hours a day complete the same work?

Option 1: $18 \frac{7}{13}$ days

Option 2: $17 \frac{11}{13}$ days

Option 3: $16 \frac{1}{14}$ days

Option 4: $13 \frac{3}{14}$ days

Question : If a man completed a work in 10 days and the same work was completed by a woman in 8 days. How many days will it take to complete if they work together?

Option 1: $\frac{38}{8}$

Option 2: $\frac{40}{7}$

Option 3: $\frac{40}{9}$

Option 4: $\frac{42}{9}$

Question : X can do a piece of work in 14 days, Y can do the same work in 28 days and Z can do it in 42 days. In how many days can X, Y, and Z together complete the work?

Option 1: $7 \frac{9}{11}$

Option 2: $7 \frac{7}{11}$

Option 3: $7 \frac{5}{11}$

Option 4: $7 \frac{3}{11}$

Question : A and B together can complete a work in 20 days. B and C together can complete the same work in 15 days. If A, B, and C all work together, then the same work gets completed in 10 days. How many days will A and C together take to complete the same work?

Option 1: 8 days

Option 2: 10 days

Option 3: 15 days

Option 4: 12 days