A Kelly is a partner in an Internet-based seed and garden supply business.
The company offers a blend of exotic wildflower seeds for $60 a pound and
common wildflower seeds for $45 a pound. Kelly is creating a medium - price
product by mixing together the seeds and selling the mixture for $54 a pound.
How many pounds of the exocitic wildflowers and common wildflowers will she
need to create a mixture of 42 pounds?