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?

Result

x =  2.667 m3

Solution:


40*20+x*100 = (20+5)*(40+x)

75x = 200

x = 83 ≈ 2.666667

Calculated by our simple equation calculator.








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