Water volume

This application allows to know the volume of hot water and the volume of cold water to mix for a final desired volume of water to a desired temperature ...

A more telling example is an explanation:
Let's say we want 30 liters of water at 37 ° C, we know that we provide a hot water which is 80 ° C and cold water at 20 ° C. My application allows to know the volume of hot water and cold water mixed to achieve this goal, in this particular case, the result is: 8.5 liters of hot water and 21.5 liters of cold water ...

Initial data:

Desired final water volume (in Liters) :
Water temperature desired end (° C) :
Average temperature of hot water (° C) :
Average temperature of cold water (° C) :

Result :

---