Answer:
invoice price (dirty price) = $1,006.435
Explanation:
semi-annual coupon = $1,000 x 5% x 1/2 = $25
clean price = $1,004.375
accrued interest = (Jan. 27 - Jan. 12) x $25 x 1/182 = $2.06
invoice price (dirty price) = clean price + accrued interest = $1,004.375 + $2.06 = $1,006.435
the dirty price or invoice price of a bond includes any accrued interest that the bond may have earned in the period between the last coupon payment and the transaction date.