Nina made 2 cake layers which were equal to 2 x 12 = <<2*12=24>>24 cupcakes.

She made the equivalent of 24 + 12 = <<24+12=36>>36 cupcakes in all.

Thus, there are 720 / 36 = <<720/36=20>>20 grams of sugar in a cupcake.

# Answer

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Nina made a two-layer cake and a dozen cupcakes for her friend’s birthday party. Each layer of cake takes the same amount of sugar to make as a dozen cupcakes. Nina used 720 grams of sugar to bake everything. How many grams of sugar are in one cupcake?
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Nina made a two-layer cake and a dozen cupcakes for her friend’s birthday party. Each layer of cake takes the same amount of sugar to make as a dozen cupcakes. Nina used 720 grams of sugar to bake everything. How many grams of sugar are in one cupcake?
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