On Elisa's birthday, her mom made a chocolate cake. After the party, 2/3 of the cake was left. The next day, Elisa ate 1/3 of what was left. Choose the model that shows what fractions of the cake Elisa ate.
answers: 2/6 2/3 4/9 2/9.

( i had to remake this question because some rude kid decided to answer it so people would think i already had the answer)