The income of a broker remains unchanged though the rate of commission…

The income of a broker remains unchanged though the rate of commission is increased from 4% to 5%. The percentage of slump in business 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 #21100