Five men can paint a building in 20 days, 8 women can paint the same building in 25 days and 10 boys can paint it in 30 days. If a team has 2 men, 6 women and 5 boys, how long will it take to paint the building?
(a) 12 days (c) 14 days
(b) 13 days (d) 15 days