The following reflects the sales and cost of goods sold of Saskatoon Supermarket Company for the years 2020 and 2021: 2020 Net sales = $391,561, Cost of Goods Sold = $251,792

2021 Net sales = $471,378, Cost of Goods Sold = $271,965

a) Calculate the gross profit from sales for each year.

b) Calculate the gross profit ratio for each year - show your calculations!

c) In which year was the gross profit ratio worse for Saskatoon Supermarket Company?