Metaform Ltd is currently financed with 35% debt and 65% equity. It has a cost of equity of 10% and a before-tax cost of debt of 6%. The corporate tax rate is 17%. The firm is considering issuing more debt with a higher interest rate of 8%. The proceeds from the new debt issuance will be used to replace common equity and the size of the debt issuance is 10% of the firms existing total capitalization.

Ryan Ridley, Metaforms finance manager, states that the new weighted-average cost of capital of the firm after the issuance will be:

WACC = (0.55)(10%)+(0.1)(1-0.17)(8%)+(0.35)(1-0.17)(6%)

Illustrate if you agree with the above statement and explain your answer using capital structure theory.