math
posted by carla .
I have 20 pieces of sod that are 1ft X 2ft and 20 pieces of sod that are 1ft X 3ft. How large a square in my garden can I put them on?

20 pieces of 1'x2' = 40 sq. ft
20 pieces of 1'x3' = 60 sq. ft
total area = 40+60 = 100 sq. ft.
How big a square can the garden be?
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