If …1,000, what percent of the sales amount is the commission

If $0.40 is the commission for sales of $1,000, what percent of the sales amount is the commission?

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 #18641