If 3 boys each make 12 muffins for a bake sale, and 2 other girls are making 20 muffins each, how many total muffins will be for sale?
The boys baked a total of 3 x 12 = <<3*12=36>>36 muffins.
The girls baked a total of 2 x 20 = <<2*20=40>>40 muffins.
Hence, there are a total of 36 + 40 = <<36+40=76>>76 muffins that will be for sale.
#### 76