First calculate the interest earned by subtracting the initial deposite from the current balance 4,443.48−2,567=1,876.48
Now use the formula of the simple interest which is I=prt I interest earned 1876.48 P principle 2567 R interest rate? T time 17 years Solve the formula for r to get R=I/pt R=1,876.48÷(2,567×17) R=0.043×100 R=4.3%