sally put red ,white,and blue handkerchiefs in a drawer. One-third of the hand kerchiefs were red ,one -fourth of the hamdkerchiefs were white and ten were blue. how many handkerchiefs of each color were there?

Answer 1

1/3 +1/4 = 4/12 + 3/12 = 7/12
so 5/12 = 10 are blue
blue = 24 , got it ?