A farmer is going to divide her 50 acre farm between two crops. Seed for crop A costs $15 per acre. Seed for crop B costs $30 per acre. The farmer can spend at most $1350 on seed. If crop B brings in a profit of $50 per acre, and crop A brings in a profit of $70 per acre, how many acres of each crop should the farmer plant to maximize her profit? acres of crop A acres of crop B