**40**. then the bottom layer would be 5 x 6. Then 40 + 30 = 70. SO our final answer is

*In the question the is also a second challenge that says “How many layers would you have if you had 200 oranges?”To solve this question we did 1 x 2, 2 x 3, 3 x 4, 4 x 5, 6 x 7, 7 x 8, 8 x 9. Then we got the answers for these equations added them together. 2, 6, 12, 20, 30, 42, 56, 72. Then they made 240 which is over 200. So we had to subtract 72 to get 168. This make our answer 7 layers with 32 oranges over.*

**70.**Our prediction was not correct but it was close.