Calculate the ROI for the following independent investments:
a. The Cordova family bought a home in Calgary for $320,000. Two years later, a real estate agent told them that they could probably sell their home for $390,000.
b. Melrose Motor Company bought an investment in a supply company for $110,000. During the year, it received $4,000 in dividends.
c. Jack Valaas bought 5,000 shares in his sister's retail company for $20,000. The com¬pany earned net income of $72,000, which resulted in earnings per share of $3.75.
d. Margot Chan bought 10 shares in Transit Airlines for $6.60 per share. One year later, she had not received a dividend but the shares were selling at $8.10 per share.
e. Downing Disposal Company had $1,340,000 in assets at the beginning of the year and $1,150,000 at the end of the year. During the year, it earned net income of $120,000. (Assume that no new shares were issued during the year and no dividends were declared.)