Question

jason iced 3/4 of a cake. he walked away and his sister stole 1/6 of the cake the piece she stole was only 2/3 iced. what fraction of the remaining cake is not iced

Answer 1

2/3 of 1/6 = 1/9

the remaining 1/3 of 1/6 = 1/18 was not iced.
1/4 - 1/18 = 7/36 of the cake is not iced.
But only 5/6 of the cake remains.
(7/36)/(5/6) = 35/216 of it is not iced.