4 men and 6 women can complete a work in 8 days, while 3 men and 7 women

4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can complete it in 10 days. In how many days will 10 women complete it?
(a) 35 days
(b) 40 days
(c) 30 days
(d) 25 days