please solve without excel

Your company currenty thas 5% coupon-rate bonds (coupons are paid semb-annualy) wath ten years to maturity and a price of $1070. If you want to issue new 10 -year coupon bonds at par, what coupon rate do you need to set? (Assume that for both bonds, the next coupon payment is dun in exactly 8 monetse) You need to set a coupon rate of 16. (Round to two decimal places)