Here, the OA is 33% which is the absolute change, but the question reads ‘AVERAGE ANNUAL’ earnings, so shouldn’t we divide 33% by 5? which would give us ~5%?
The average here refers to the annual earnings/ number of stores and not the average of the 5 annual earnings across 2010 - 2015 like you seem to think.
I see, could you tell me how would have the question been phrased if they were asking for the average year’s earnings?
What do you mean?