Final answer:
Carmela has eaten half of the pie in total.
Step-by-step explanation:
Carmela ate two-sixths of the pie for snacks and one-sixth of the pie for a bedtime snack.
To find out how much of the pie she has eaten in total, we need to add the two fractions together.
2/6 + 1/6 = (2 + 1)/6 = 3/6
However, we can simplify this fraction by dividing the numerator and the denominator by their greatest common divisor, which is 3 in this case.
3/6 simplifies to 1/2, which means Carmela has eaten half of the pie in total.