Euros

Peter spent a quarter of his pocket saving. He has 9 euros now in his wallet. How many euros spent?

Correct answer:

x =  3 Eur

Step-by-step explanation:

$$\begin{gathered} 3\mathrm{/}4a=9 \\ a=9\cdot 4\mathrm{/}3=12 \\ x=a\mathrm{/}4=12\mathrm{/}4=3\text{ Eur} \end{gathered}$$

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