How are they getting t? Please do not show on excel, I do not have access to excel for this.

Please show each step thank you.

Caston's zero coupon bonds have a market price of $318.46, a face value of $1,000, and a yield to maturity of 6.69 percent. How many years is it until these bonds mature? Assume semiannual compounding. Multiple Choice 34.78 years 32.28 years 17.39 years 24.01 years Explanation Bondprice=$318.46=$1,000/(1+.0669/2)t t=34.78 semiannual periods =17.39 years