5. Based on the following information , find out WACC:

In million $: total assets $160.00 , debt 40% , net income $12.00 , dividends 60% of the net income, last dividends of $1 , market price of our stock $20 , expected real rate of interest and inflation 4% and 3% respectively , debt risk premium 2% , tax rate 20% . Assume that the growth rate is constant and limitless 15% .

I use the formula WACC= (E/D+E)*Ke + (D/E+D)*Kd*(1-tax)

So far, I got WACC=(96/160)*Ke + (64/160)*Kd*0,8.

I dont know if what I got so far is correct, but if it is, what I dont know how to calculate is the cost of equity and debt (Kd and Ke). Also, I dont know what to do with the growth rate and how to use the information about inflation.