A floater and an inverse floater are being created from a CMO tranche with a par value of $$150,000$ and a coupon rate of $6\mathrm{.}5\%.$ What is the coupon rate of the inverse floater if the coupon rate of the floater is LIBOR $+1\mathrm{.}0\%$ and the coupon leverage is $2\mathrm{.}5?$