The table below shows the blood types of 75 donors after a one-day blood drive. based on the results, what is the chance that a random donor has type a blood type- o a b ab frequency- 31 33 9 2

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.