Question

There was 1/4 of the pizza left, marie ate 2/3 of that what part of the original pizza is left now?

Answer 1

2/3 of 1/4 is 2/3*1/4 = 2/12.
So, Marie ate 1/6 of the original pizza
And so there is 1/4-1/6 =2/24 or 1/12 of the original pizza left

Answer 2

She ate 2/12 of the original pizza, or aka 1/6

But she has eaten a total of 11/12 of the pizza