Given the following information about a CMO: - $15 million of mortgage pool principal assigned to the floater class. $2 million assigned to the inverse floater class. - Floater class coupon rule: LIBOR + 0.2% - Inverse floater class coupon rule: 12.5% - L x LIBOR - LIBOR in the first month is 3% What is the WAC coupon rate of the underlying collateral pool? Round your answer to three decimal points (e.g. if your answer is 5.1%, write 0.051).