Cat

Maros sets aside one-fifth of his monthly pocket money for a new smartphone. From the remaining amount, he spends half on food for his cat. The remaining €8 is spent on other things. How much pocket money does Maros get per month?

Final Answer:

x =  20 Eur

Step-by-step explanation:

$$\begin{gathered} \frac{1}{5}x+\frac{1}{2}\cdot (1-\frac{1}{5})x+8=x \\ 1/5\cdot x+1/2\cdot (1-1/5)\cdot x+8=x \\ 4x=80 \\ x=\frac{80}{4}=20 \\ x=20=20\text{Eur} \end{gathered}$$

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