Michal computer saving

Michael is saving for a new computer. His parents gave him 130 euros, which was 26 percent of the total amount. He received 20 percent of the price of the computer from his grandmother, and his aunt added another 35 euros. How many euros does Michael still need for a computer?

Final Answer:

x =  235 eur

Step-by-step explanation:

$$\begin{gathered} r_1=26\%=\frac{26}{100}=\frac{13}{50}=0.26 \\ r=130 \\ r=r_1\cdot p \\ 130=0.26\cdot p \\ 0.26p=130 \\ p=\frac{130}{0.26}=500 \\ p=500 \\ {r}_2=20\%=\frac{20}{100}=\frac{1}{5}=0.2 \\ s=r_2\cdot p=0.2\cdot 500=100\text{eur} \\ t=35\text{eur} \\ y=r+s+t=130+100+35=265\text{eur} \\ x=p-y=500-265=235\text{eur} \end{gathered}$$

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