value, Cost of Tax After-tax Weighted
Source of capital rupees, million capital, % rate, %cost, %cost, %
Debt 100 7.50% 30.00% 5.25% 0.88%
Equity 500 10.50% 10.50% 8.75%
Weighted average cost of capital
Key inputs Market capitalization
Risk-free rate, % 7.00% Share price, rupees 25
Market risk premium, % 5.00% Shares outstanding, millions 20
Beta 0.70 Market capitalization 500
Cost of Debt premium, % 0.50%
Question 2 Capital structure changes
Market Debt, Equity, Shares
value, Cost of Tax After-tax Weighted rupees, rupees, outstanding, Price,
Source of capital rupees, million capital, %rate, %cost, %cost, % million million millions rupees
Debt 300 8.00% 30.00% 5.60% 2.58% Original 100.0 500.0 20.0 25.0
Equity 350 12.42% 12.42% 6.69% Appreciation 50.0 20.0 2.5
Weighted average cost of capital
9.27% Increase 200.0 (200.0) (7.3)
Total 300.0 350.0 12.7 27.5
Key inputs Unlevered beta
Risk-free rate, % 7.00% Original beta 0.70
Market risk premium, % 5.00% Original debt to equity 0.20
Beta 1.08 Unlevered beta 0.58
Cost of Debt premium, % 1.00%
Tax rate, % 30.00% New debt to equity 0.86
Cost-of-debt premium 2.1%
for equivalent cost of capital to
for equivalent cost of capital to