If 90 percent of 600 is 50 percent of x, then x=?

If 90 percent of 600 is 50 percent of x, then x=?

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 #74169