The following represents the financial information for Plaza Plastics for May and June:

Required:

a$.$ Classify these items into Prevention, Appraisal, Internal failure, or External failure costs.

b$.$ Calculate the ratio of the prevention, appraisal, internal failure, and external failure costs to sales for May and June.

Complete this question by entering your answers in the tabs below.

Calculate the ratio of the prevention, appraisal, internal failure, and external failure costs to sales for May and June.

Note: Round your percentage answers to $1$ decimal place $($i$.$e$.,\mathrm{.}321$ as $32\mathrm{.}1).$