Answer: 3.25%
Step-by-step explanation:
The interest rate that applies to the payment due in December 20XX will be the addition of the the six-month Libor which is 3.00% at the end of June 20XX and the coupon rate of a floating-rate note which is expressed as six-month Libor 25 bps.
Therefore, the answer will be:
= 3.00% + 0.25%
= 3.25%