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 40 % of the total . what fraction of the total is women who own cars ?
"consider a group of 200 men and 100 women , a total of 300 people . 40 % of them , which is 120 , 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 60 . it means that there are 100 - 60 = 40 women who own a car , and this represents 40 / 300 = 2 / 15 of the total . answer e"
divide(subtract(divide(subtract(const_100, 40), const_2), const_4), multiply(40, const_2))