When the U.S. Treasury offers to sell you a bond for $613.81. No payments will be made until the bond mature,?

Charlotte D asked: What if the U.S. Treasury offers to sell you a bond for $613.81. No payments will be made until the bond matures 10 years from now , at which time it will be redeemed for $1,000. What interest rate would you earn if you bought this bond at the offer [...]