New salespeople at a retail store generate an average of $50,000 in profit their first year. In addition, the reduced workload on the rest of the sales staff improves their efficiency and ability to provide high-quality customer service by 10 percent. This is worth an additional $20,000 to the company. The cost of hiring and training a new salesperson is expected to be $3,000 and $8,000 respectively. The salary for this position is $35,000. What is the return on investment of hiring an additional salesperson?