Kiki made 10 cucumber sandwiches and 8 egg sandwiches for the tea party.  Each cucumber sandwich was cut into 4 triangles.  Each egg sandwich was cut into 2 rectangles.  If her guests ate 28 triangles and 12 rectangles, how many slices of bread did they eat?
The guests ate 28 / 4 = <<28/4=7>>7 cucumber sandwiches.
The guests ate 12 / 2 = <<12/2=6>>6 egg sandwiches.
They ate a total of 7 + 6 = <<7+6=13>>13 sandwiches.
They ate a total of 13 x 2 = <<13*2=26>>26 slices of bread.
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