A group of workers had agreed on a very strange payment schedule

A group of workers had agreed on a very strange payment schedule. Each of them would get $100 for every day that they had worked, but for every day they did not work will have to return $25. After 30 days they realised they did not earn any money. How many days the workers did not work?

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #77361