Kate won a bag of candy at a raffle. She gave 1/5 of the candy to her brother, 1/4 of the candy to her friend, and had 11 pieces left over. How many pieces did she give her Brother?

Answer 1

1/5 + 1/4 = 9/20

so, the rest is 11/20

11/20 x = 11
so, 1/20 x = 1
x = 20

1/5 of 20 is 4 to her brother