Question

Caleb made a stack of popcorn balls on a table. He placed sixteen balls on the table, then added three more layers on top of them. Each layer had four fewer balls than the previous layer. How many popcorn balls in all were in the stack?

Answer 1

He never found out

Explanation:

his mom slapped him for making popcorn ball towers instead of doing productive things.

Answer 2

Explanation:

16 bottom + 12 1st layer + 8 2nd layer + 4 3rd layer

16+12+8+4 = 40 popcorn balls