# The pool

The pool has a volume of 40 m3, and the water temperature is 20 °C. How much water at 100 °C should we pour into the pool to increase the water temperature by 5 °C?

x =  2.6667 m3

### Step-by-step explanation:

40•20+x•100 = (20+5)•(40+x)

75x = 200

x = 8/3 ≈ 2.666667

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