Juraj monthly pocket

George pays from a monthly pocket quarter for a snack, a fifth for drinks, and a third for technical details for a PC. He saves the remaining 13 euros. What's his monthly pocket money?

Final Answer:

x =  60 Eur

Step-by-step explanation:

$$\begin{gathered} \frac{x}{4}+\frac{x}{5}+\frac{x}{3}+13=x \\ x/4+x/5+x/3+13=x \\ 13x=780 \\ x=\frac{780}{13}=60 \\ x=60=60\text{Eur} \end{gathered}$$

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