To find the average number of muffins baked by both the girls, wed need to find the total number of muffins baked by the girls together. Number of muffins baked by Andrea = h - -- - - - - -- ------------------- by violet = h-8 ( 8 fewer than h means h-8) So the total number of muffins = h + h - 8 = 2h-8 To find the average, divide the total by the number of people(2) = 2h-8 /2 = h - 4