What is the final equilibrium temperature when 12 g of milk at 20 degrees C is added to 180 g of coffee at 92 degrees C?

What is the final equilibrium temperature when 12 g of milk at 20 degrees C is added to 180 g of coffee at 92 degrees C? assume the specific heats of milk and coffe are the same as that of water, and neblect the specific heat of the container?

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