Question : 3 men or 5 women can do a work in 57 days. In how many days can 9 men and 4 women do that same work?

Option 1: 16 days

Option 2: 18 days

Option 3: 14 days

Option 4: 15 days

Question : 4 men and 8 women complete a job in 10 days and 5 men and 24 women complete the same work in 4 days. In how many days will 1 man and 1 woman complete the same work?

Option 1: $63 \frac{1}{3}$ days

Option 2: $69 \frac{7}{9}$ days

Option 3: $67 \frac{1}{3}$ days

Option 4: $62 \frac{2}{9}$ days

Question : 10 women can do a piece of work in 6 days, 6 men can do the same work in 5 days, and 8 children can do it in 10 days. What is the ratio of the efficiency of a woman, a man, and a child, respectively?

Option 1: 4 : 6 : 3

Option 2: 4 : 5 : 3

Option 3: 2 : 4 : 3

Option 4: 4 : 8 : 3

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 : A can finish a work in 25 days, and B can do the same work in 15 days. B worked for 10 days and left the job. A alone can finish the remaining work in how many days?

Option 1: $7 \frac{1}{3}$ days

Option 2: $6 \frac{1}{3}$ days

Option 3: $8 \frac{1}{3}$ days

Option 4: $5 \frac{1}{3}$ days