Explanation:
[tex]\text { Dividend, } \mathrm{D}= 4 \\\text { Dividend yield rate }=\mathrm{D} / \text { Current price }=8 % \\\text { Current price }, \mathrm{P} 0=\mathrm{D} / 8 \%=\$ 4 / 8 \%=$ 50[/tex]
[tex]\text { Flotation cost, } \mathrm{F}=8 \% \text { of current price }=\$ 50 * 8 \%=\$ 4 \\ \text { Growth rate,g }=4 % \\ \text { Cost of new common stock, } \mathrm{Ke}=[\mathrm{D} 1 /(\mathrm{P} 0-\mathrm{F})]+\mathrm{g} \\ =[\$ 4 /(\$ 50-\$ 4)]+4 \% \\ =0.086956522+0.04 \\ =0.126956522=12.7 \% \text {(Rounded) }[/tex]
12.7%