The marketing department is considering a shift to internet-based advertising. The advertising rates and demographics of several different options are shown below. The marketing campaign goal is to reach the following audiences: Age 18 to 25 - 1,000,000 impressions Age 26 to 35 - 1,500,000 impressions Age 36 to 45 - 750,000 impressions

What mix of advertising investment will be most economical while still meeting goals? Source Cost per thousand impressions dollars demo break down A 30 18-25(30%), 26-35(50%), 36-45(20%) B 20 18-25(10%), 26-35(60%), 36-45(30%) Round to nearest whole number value: Investment in source A $ (not multiple) Investment in source B $ (not multiple)