7 a. Perkins Company has total assets of $225,000 and total liabilities of $135,000. How much is the companys total stockholders equity?

b. Gassol Company has total liabilities of $255,000 and total stockholders equity of $142,500. How much total assets does the company have?

c. If Brown Companys total assets increased by $52,500 during the year, and its total liabilities decreased during the same year by $7,500, what was the change in the companys total stockholders equity?