The Green Company, an accrual basis taxpayer, provides business-consulting services. Clients generally pay a retainer at the beginning of a 12-month period. This entitles the client to no more than 40 hours of services. Once the client has received 40 hours of services, Green charges $400 per hour. Green Company allocates the retainer to income based on the number of hours worked on the contract. At the end of the tax year, the company had $40,000 of unearned revenues from these contracts. The company also had $10,000 in unearned rent income received from excess office space leased to other companies. Based on the above, what Green must include in gross income for the current year ?