The answer to your question will be arrived if we look at the figures in the Dominos income statement shown in the video. Providing the figures from the income statement for your convenience..
Feb 09 2014 12:22 AM
Interest charges in 2008 is 58.11 millions
Interest charges in 2009 is 98.95 millions
Hence, Additional interest paid by Dominos in 2009 is calculated by deducting 2008 interest expenses from 2009 interest expense
i.e; 98.95 millions - 58.11 millions = 40.84 millions.