Calculate the ROI for the following independent investments:
a. Maria Chevas bought a GIC (guaranteed investment certificate) on June 1 for $3,000. The certificate reached maturity on December 1 (it was a six-month certificate). On December 1, she cashed in the certificate and received her original $3,000 back plus $37 in interest.
b. On January 2, Jim Wilson bought 10 shares of a pharmaceutical company for $12.00 a share. At year end, he received a dividend of $0.30 per share. At that time, the shares were trading for $12.50 per share.
c. Susan Blanchard bought a 25% interest in an outdoor adventure partnership for $15,000. During the year, the partnership earned net income of $50,000.
d. The Free-flow Plumbing Company had $250,000 in net assets (shareholders' equity) at the beginning of the year, and $280,000 at the end. During the year, it earned net income of $60,000.
e. Anastasia Kostovia bought a condo in Ottawa for $125,000. One year later, a real estate agent suggested that she could sell the condo for $130,000.