Of the four numbers, whose average is 100, the first is one-fourth…

Of the four numbers, whose average is 100, the first is one-fourth of the sum of the last three. The first 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 #33973