Please provide a detailed solution to the problem below. Thank you:)

Dry wall Glassfiber Siding Inside Outside The wall of a house comprised of three layers, i.e., drywall, glass fiber insulation and plywood siding. The total area of the wall is 300 m. During the snowing days, the outside temperature is -5C. Note that the convective heat transfer coefficients are 55 W/mK and 20 W/mK for outside and inside of the house, respectively. The properties and dimensions of the three layers are as follows: Drywall: thickness 10 mm, k=0.17W/mK Glass fiber: thickness 100 mm, k=0.038W/mK Siding: thickness 20 mm, k=0.12W/mK Questions: If you want to keep the indoor temperature at 20C, what is the heat transfer rate through the wall. Also, calculate the temperatures on the two surfaces of the wall. If you want to reduce the energy consumption for maintaining the indoor temperature by 20%, what temperature you need to set