PLEASE INDICATE WHICH ANSWERS ARE RIGHT OR WRONG (in case they are wrong, please indicate right answer, if the answer is right, no need to develop the exercise). I only need help with the last exercise though.

a) Considering the sales of the company shown below, what would be the average price?

A= $49.31

b) Considering that the sales of the company in the last month were $150,000 and the cost of sales was $70,000, what was the utility in $ in that month?

A= $80,000.00

c) Taking into account the Utility $ obtained in the previous paragraph and considering the same sales of the last month that were $150,000, what would be the Utility in %?

A= 47%

d) Last June, the company generated sales of $85,000, for which it gave discounts for an amount of $5,000, therefore, how much would be the percentage in discounts (Markdown%) that it offered?

Please find the answer

\begin{tabular}{|c|r|r|} \cline { 2 - 3 } \multicolumn{1}{c|}{} & Sales $ & Sold U \\ \hline JAN & 4,000 & 80 \\ \hline FEB & 3,500 & 72 \\ \hline \end{tabular} \begin{tabular}{|c|r|r|} \cline { 2 - 3 } \multicolumn{1}{c|}{} & Sales $ & Sold U \\ \hline JAN & 4,000 & 80 \\ \hline FEB & 3,500 & 72 \\ \hline \end{tabular}