3 Sandra considers buying a house. Currently, she rents a place for 13,500 a year. The current annual interest rate on mortgages is 9%. Her planning period in 30 years, if she doesn't want to increase his housing costs, what amount of mortgage is available for his purchase? Q4: Smith Company reports the following information (in thousand) during a recent year sales, $30.000, net income is 24% of the total sales, and the total assets are 42% of the net income: Calculate: (6 Marks) (1) Return on assets. (2) Asset turnover. (3) Profit margin