if there are half as many women as men in a group and an equal number of men and women do not own cars - a group that is 30 % of the total . what fraction of the total is men who own cars ?
consider a group of 100 women and 200 men , a total of 300 people . 30 % of them , which is 90 , form a group of people who do n ' t own a car . half of them are men , and the other half are women , more precisely 45 . it means that there are 200 - 45 = 155 men who own a car , and this represents 155 / 300 = 31 / 60 of the total . answer b
divide(subtract(divide(subtract(const_100, 30), const_2), const_4), multiply(30, const_2))