A Cleaning Company Uses 10 Lbs Each of Chemicals A

question 3

Multiple Choice

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%

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