Physics Heat 2 Help?

Let T be the temperature between the wood and wool surfaces

Consider an area of 1 m^2 on the wall.
Rate of heat flow through the wool layer
= 0.02 x (20.4 - T)/0.04 W/m^2
Rate of heat flow through the wood layer
= 0.08 x (T)/0.03 W/m^2

Assume there is no heat loss by other paths, we have, by conservation of energy,
0.02 x (20.4 - T)/0.04 = 0.08 x (T)/0.03
solve for T gives T = 3.22 'C