John found that the average of 15 numbers is 40

John found that the average of 15 numbers is 40. If 10 is added to each number then the mean of number is?

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #19