Please help with this

Evaluate the CPM for the magazines below using the information provided and answer the following questions. Based on total adults who read each magazine circle the magazine that is best in terms of efficiency. Note: Total impressions in this case is monthly circulation x readers per copy. Round Impressions to whole numbers and CPM to two decimal places. (2 marks) Which magazine is best in terms of $$ efficiency? (1 mark) Cosmo Canadian Living Monthly Circulation 100 000 250 000 Readers per Copy 2.1 3.5 Total Impressions a) c) Full page Ad Cost $22 000 $30 000 CPM b) d)