3.2 Suppose you buy a round lot (100 shares) of Dog Solutions stock on 60% margin when it is selling at $10 a share. The broker charges an 8 percent annual interest rate and commissions are one-half of one percent of the total stock value on the purchase and one-quarter of one percent on the sale. If at year end you receive a $0.10 per share dividend and sell the stock for $13, what is your rate of return on the investment?