Final answer:
Teresa spends (5)/(12) of her day at school or eating meals.
Step-by-step explanation:
To find the fraction of the day that Teresa spends at school or eating meals, we need to add the fractions together. Teresa spends (1)/(3) of her day at school and (1)/(12) of her day eating meals. To add fractions, we need a common denominator, which in this case is 12.
Since (1)/(3) is equivalent to (4)/(12), and (1)/(12) is already in the correct form, we can add the fractions:
(4)/(12) + (1)/(12) = (5)/(12)
Therefore, Teresa spends (5)/(12) of her day at school or eating meals.