Answer:
$81 million in bonds issued January 1, 2018
coupon rate 12%, semiannual 6% interest
maturity = 10 years x 2 = 20 periods
market interest rate = 14% / 2 = 7% semiannual
1) market price of the bonds:
PV of face value = $81,000,000 / (1 + 7%)²⁰ = $20,931,939.23
PV of coupon payments = $4,860,000 x 10.59401 (PV annuity factor, 7%, 20 periods) = $51,486,888.60
market price = $72,418,827.83 ≈ $72,418,828
2) January 1, 2018, bonds issued at a discount
Dr Cash 72,418,828
Dr Discount on bonds payable 8,581,172
Cr Bonds payable 81,000,000
3) June 30, 2018, first coupon payment
Dr Interest expense 4,999,318
Cr Cash 4,860,000
Cr Discount on bonds payable 139,318
amortization of bond discount = ($72,418,828 x 7%) - $4,860,000 = $4,999,318 - $4,860,000 = $139,318
4) December 31, 2018, second coupon payment
Dr Interest expense 5,079,070
Cr Cash 4,860,000
Cr Discount on bonds payable 219,070
amortization of bond discount = ($72,558,146 x 7%) - $4,860,000 = $5,079,070 - $4,860,000 = $219,070