Answer:
Answer: D. 31⅔
[tex]{ \rm{ \frac{2}{5} \: hours = 12 \frac{2}{3} \: ft {}^{2} }} \\ \\ { \rm{1 \: hour = ( \frac{5}{2} \times 12 \frac{2}{3}) \: {ft}^{2} }} \\ \\ = { \rm{ \frac{5}{2} \times \frac{38}{3} }} \\ \\ = { \rm{ \frac{95}{3} }} \\ \\ = { \rm{31 \frac{2}{3} }}[/tex]
