Neco 2017 Commerce Question 14

A company runs two advertising campaigns, each with a total budget of \(\N2,500,000\). Campaign A uses 10 TV spots costing \(\N150,000\) each (each spot reaches 0.8 million viewers) and 20 newspaper ads costing \(\N50,000\) each (each ad reaches 0.2 million readers). Campaign B uses 50 radio ads costing \(\N30,000\) each (each ad reaches 0.5 million listeners) and 100 online banner ads costing \(\N10,000\) each (each banner reaches 0.1 million viewers). The cost per thousand impressions (CPM) is calculated as \(\text{Cost}\,/\,(\text{Total reach in thousands})\). Compute the average CPM for each campaign (to two decimal places) and state which campaign is more cost‑effective.