Liu Industrial Machines issued 153,000 zero coupon bonds six years ago. The bonds originally had 30 years to maturity with a yield to maturity of 7.3 percent. Interest rates have recently increased, and the bonds now have a yield to maturity of 8.4 percent. If the company has a $46.8 million market value of equity, what weight should it use for debt when calculating the cost of capital?

Weight of debt = ___