A biology

A biology experiment required pouring 2/9 liter of nutrient solution and 2/3 liter of pure water into a tank. At the end of the experiment, 3/10 liter of fluid had evaporated. How much fluid was left in the tank?

Correct answer:

x =  53/90 l

Step-by-step explanation:

$x=\frac{2}{9}+\frac{2}{3}-\frac{3}{10}=\frac{20}{90}+\frac{60}{90}-\frac{27}{90}=\frac{20+60-27}{90}=\frac{53}{90}=\frac{53}{90}\text{l}=0.5889\text{l}$

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