Условие:
CPM = $10\nOn the campaign A traffic went to the offer with PA = $5 and on the campaign B traffic went to the offer with PA = $4.\nCampaign A\nROI = 20%\nProfit = $100\nCTR = 15%\nCampaign B\nROI = 50%\nProfit = $400\nCTR = 20%\nCalculate CR, EPV, EPC of each campaign and determine how much these indicators are higher in one campaign than in another.

