Use the commission schedule from Company A shown

in the table to find the annual rate of interest earned on

the investment. $($Note: commissions are rounded to the

nearest cent$)$

Principal $(Valueof$ Stock$)$ Commission

Under $$3,000,$$$25+1\mathrm{.}8\%of$ principal

$$3,000to$ $$10,000,$$$37+1\mathrm{.}4\%of$ principal

An investor purchases $489$ shares at $$11\mathrm{.}84$ a share, holds the stock for $26$ weeks, and then sells the stock for $$16\mathrm{.}41$ a share.

The annual rate is $\%.($Round to five decimal places.$)$