Explanation:

- Let's break down the information given:

- x women can complete the work in 2y days.

- 1.5x men can complete it in y days.

- 2x children can complete it in 3y days.

- Combined work capacity:

- The work done by 1 woman in 1 day = 1 / (2y) of the total work.

- The work done by 1 man in 1 day = 1 / (1.5y) of the total work.

- The work done by 1 child in 1 day = 1 / (6y) of the total work.

- For 8 women, 8 children, and 8 men:

- The work done together in 1 day = 8*(1/2y) + 8*(1/6y) + 8*(1/1.5y) of the total work.

- This completes the work in 22.5 days.

- For 9 men:

- The work done by 9 men in 1 day = 9 / (1.5y) of the total work.

- They complete the work in (y + 20) days.

- Solving for y, we find that it equals 24.

Therefore, the correct answer is:

Option: 5, 24