a) Apartment A with an area of 49 m² is sold with an asking price of NOK 2,289,000. Another detached house B with an area of 165 m² is sold with an asking price of NOK 4,250,000. What is the price per square meter for the two houses?

b) Hege takes out a mortgage of NOK 3,000,000 with a term of 30 years. Hege has a mortgage interest rate of 3%, which we assume is constant throughout the term. How much greater are the total interest costs with annuity loans than with serial loans? How big is the total interest in relation to the loan amount? Make calculations for both annuity loans and serial loans.