if 40% of (x-y) = 30% of (x+y) then what percent of…

if 40% of (x-y) = 30% of (x+y) then what percent of x is y?

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 #9108