Question

Se amesteca 400g de lichid la temperatura de 50* C cu 600g de lichid la temperatura de 30* C. Cate grade are amestecul ?

Answer 1

38................................................

Answer 2

 $calculam\; media\; ponderata \;...\\ \frac{400*50^o+600*30^o}{400+600}=\frac{100(200+180)}{100\cdot10}=\frac{380}{10}=38^o$