Consider the following statement: Jenny Limited has an after-tax cost of debt of 6% at the current tax rate of 25%, if the government increases the tax rate by 5%, we would be able to calculate the new after-tax cost of debt.

Do you agree the above statement? If yes, what is the numerical value of the new after-tax cost of debt? If you disagree, then what additional information should be given in order to have sufficient information to calculate the after-tax cost of debt?