Temperature 37001

The mother prepared half a liter of cold water for the children to drink. It mixed water at 20 °C with 400 ml of cold water at 5 °C. What was the temperature of the prepared drink?

Correct answer:

t =  8 °C

Step-by-step explanation:

V=1/2=21=0.5 l V1=400 ml l=400:1000  l=0.4 l t1=5 °C V2=VV1=0.50.4=101=0.1 l t2=20 °C  t V=t1 V1+t2 V2 t 0.5=5 0.4+20 0.1  0.5t=4  t=0.54=8  t=8=8°C



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