"A solar hot-water heating system consists of a hot-water tank and a solar panel. The tank is well insulated and has a time constant of 64 hr. The solar panel generates 2000 Btu/hr during the day, and the tank has a heat capacity of 2°F per thousand Btu. If the water in the tank is initially 110°F and the room temperature outside the tank is 80°F what will be the temperature in the tank after 12 hrs of sunlight"

please show full work (maybe a pic) and answer ASAP giving tons of points for it