Calculate the holding period return for a $1,000 face value bond with a $60 annual coupon purchased for $970.00 and sold three years later for $1,060.00

The official answer should be 9.02%, but I do not understand why, so please write down the calculation process. Thanks. According to the answer, "The holding period return is 9.02%. Here we have to consider the present value of the three coupon payments as well as the present value of the capital gain that results from purchasing the bond for $970 and selling it for $1,060."