Let x be the number of men. Then the number of women is (50-x). Following the condition, you may write the proportion= = . From the proportion 7x = 3*(50-x). Simplify and solve 7x = 150 - 3x 7x + 3x = 150 10x = 150 x = 150/10 = 15. ANSWER. 15 men and (50-15) = 35 women.