Q4,,,. You attach a United Way banner to your corporate headquarter building, and 10% of your target population drives by the billboard twice per week day, and the advertising campaign lasts 30 weekdays. You can put up the billboard at a traffic intersection, and 12 % of your target population drives by the billboard twice per weekday. How many weekdays must the campaign last if you wish to have the same GRP as the first option? (2 marks)