A cleaning company uses $$10$ of chemicals, $$40$ of labor, and $$5$ of misc, expenses for each house it cleans. After some quality complaints, the company has decided to increase its use of chemicals by $50\%.$ By what percentage has multifactor productivity fallen?

Select one:

a$.16\mathrm{.}79$

b$.25\%$

c$.0\%$

d$.505$

e$.8\mathrm{.}3\%$

Clear my choice