A cleaning company uses 10 lbs each of chemicals A, B and C for each house it cleans. After some quality complaints, the company has decided to increase its use of chemical A by an additional 10 lbs for each house.

By what % has productivity (houses per pound of chemical) fallen?

A) 0%

B) 10%

C) 15%

D) 25%

E) 33%

Government ownership and control of resources

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