Answer: 2.34%
Step-by-step explanation:
Yield to call is the rate that would make the issue price equal to the call price in future. It is therefore the rate that would compound the $498 to $600 in 8 years.
Semiannual compounding means that the interest rate and the number of periods need to be adjusted:
Number of periods = 8 * 2 = 16 semi annual periods
Interest = x / 2 = 0.5x
Call price = Issue price * ( 1 + rate) ^ number of periods
600 = 498 * (1 + 0.5x)¹⁶
(1 + 0.5x)¹⁶ = 600 / 498
0.5x = ¹⁶√ (600/498) - 1
x = 0.011713672618214 / 0.5
x = 2.34%