Texts: You prepare a bath by pouring 20 liters of water at 40°C into a tub. You really want to take a bath at 36°C water.
a. How much water at 20°C must you add to reach the desired final temperature?
b. If instead you added ice at 0°C to water at 40°C, how much ice would be needed to lower the temperature to 36°C?