$,<mn\; id="EditorElement\_640203">5</mn>$ marks $>$ A bond, paying semi$-$annual coupons of $$42,$ is purchased at a discount to yield

$j_2=9\%.$ The book value adjustment in the $8^{th}$ coupon period is $$8\mathrm{.}07.$ What is the purchase price

of this bond?