Keep the rates; change the order mix

Fictional print shops. Fixed same-day rates: A completes 90% of routine and 20% of complex orders. B completes 80% of routine and 10% of complex orders. Change only the share of routine work.

Routine share at A: %

Routine share at B: %

A pooled rate

B pooled rate

Higher pooled rate

Slider values 11.1% and 88.9% approximate 1/9 and 8/9. The article’s exact counts produce 27.777…% and 72.222…%. These are hypothetical weighted rates, not new observed orders or proof of a causal shop effect.