Answer:
A. Issuance of the bonds on January 1, 2018.
Dr Cash 212,000
Cr Bonds payable 200,000
Cr Premium on bonds payable 12,000
B. Payment of interest and amortization on June 30, 2018.
premium on bonds payable = $12,000 / 40 coupons = $300 per coupon
Dr Interest expense 7,700
Dr Premium on bonds payable 300
Cr Cash 8,000
C. Payment of interest and amortization on December 31, 2018.
Dr Interest expense 7,700
Dr Premium on bonds payable 300
Cr Cash 8,000
D. Retirement of the bond at maturity on December 31, 2037, assuming the last interest payment has already been recorded.
Dr Bonds payable 200,000
Cr cash 200,000