In a party hall, there are people in blue and red dresses. The ratio of number of men in blue to the number of Women in red is 3 ∶ 7, The ratio of men in red  to the number of women in blue is 2 ∶ 1. If the ratio of number of people in blue to the number of people in red is 35 ∶ 76, then what is the ratio of number of men to the number of women?