711 - Math - Problem Solving

Question: If 20 men or 24 women or 40 boys can do a job in 12 days working for 8 hours a day, how many men working with 6 women and 2 boys take to do a job four times as big working for 5 hours a day for 12 days?

1. 8 men
2. 12 men
3. 2 men
4. 24 men