An apartment building in your neighborhood is for sale for $140,000. The building has four units, which are rented at $500 per month each. The tenants have long-term leases that expire in 5 years. Maintenance other expenses for care and upkeep are $8000 annually. A new university is being built in the and it is expected that the building could be sold for $160,000 after 5 years. (q) What is the internal rate of return for this investment?