###Human: Jennie makes quilts. She can make 7 quilts with 21 yards of material. How many yards of material would be required to make 12 quilts?, ### Assistant: The amount of material that Jennie needs per quilts is 21 yards / 7 quilts = 3 yards per quilt.
In order to make 12 quilts, Jennie will need 12 quilts * 3 yards = 36 yards. 
 So the answer is :  36