Answer:gain on retirement before income taxes=$50,000
Step-by-step explanation:
Account and Particulars
Carrying value of bond = $4,000,000
Subtract:
Unamortized bond discount $40,000
bond issue costs $30,000
Overall net amount $$4,000,000 -( $40,000+$30,000) = $3,930,000
But
The paid amount at retirement = $4,000,000 x 97%= $3,880,000
Therefore gain on retirement before income taxes =$3,930,000- $3,880,000 = $50,000