Answer:
$5,000
Explanation:
interest earned on the first coupon = ($120,000 x 5% x 6/12) - ($120,000 x 5% x 1/12) = $2,500
interests earned until October (for the $40,000) = $40,000 x 5% x 3/12 = $500
interests earned until December (for $80,000) = $80,000 x 5% x 6/12 = $2,000
total interest earned during the year = $2,500 + $500 + $2,000 = $5,000