Final answer:
Mrs. Thomas needs 96 packages of applesauce and 96 packages of fruit cup.
Step-by-step explanation:
To find how many packages of each snack Mrs. Thomas needs, we need to calculate the total number of snacks needed. There are 96 fourth graders and each student will receive 1 applesauce and 1 fruit cup. Therefore, Mrs. Thomas needs 96 packages of applesauce and 96 packages of fruit cup.