Final answer:
Pascal ate 1/12 of the whole pie.
Step-by-step explanation:
To find out how much of the whole pie Pascal ate, we need to subtract the fraction of the pie he ate from the fraction his mom gave him. Pascal's mom gave him 3/4 of the apple pie, and he ate 2/3 of what was given to him. So, we can subtract 2/3 from 3/4.
First, we need to find a common denominator for the fractions, which is 12. We can multiply the numerator and denominator of 3/4 by 3 to get 9/12.
Next, we can multiply the numerator and denominator of 2/3 by 4 to get 8/12.
Finally, we can subtract 8/12 from 9/12 to get 1/12.
Therefore, Pascal ate 1/12 of the whole pie.