# Mixed hot water with a volume of 3 liters taken at a temperature of 100 degrees and cold water with a volume of 2 liters

January 17, 2021 | education

| **Mixed hot water with a volume of 3 liters taken at a temperature of 100 degrees and cold water with a volume of 2 liters at a temperature of 20 degrees. Determine the temperature of the mixture.**

The amount of heat received by cold water is equal to the amount of heat given off by hot water. Let’s assume that 1 liter of water has a mass of 1 kg.

Then you get the following equation:

c * 3 * (100 – t) = c * 2 * (t – 20);

Let’s transform and solve:

300 – 3t = 2t – 40;

5t = 340;

t = 68;

Answer: 68 degrees.