Refer to the following mentioned data.

Required:

a$.$ Calculate the gross profit ratio for each of the past three years.

b$.$ Assume that Campbell's net sales for the first four months of $2021$ totaled $$12\mathrm{.}15$ billion. Calc

and gross profit for the four months, using the gross profit ratio for $2020.$

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

Required A

Calculate the gross profit ratio for each of the past three years.

Note: Round your answers to $2$ decimal places.