May will be able to make 2 x 3 = <<2*3=6>>6 red scarves.
She will be able to make 3 x 6 = <<3*6=18>>18 blue scarves.
And she will be able to make 4 x 3 = <<4*3=12>>12 yellow scarves.
Therefore the total scarves she can make is 12 + 18 + 6 = <<12+18+6=36>>36.
#### 36