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a+b+c=525 c=b× 2 b=a×2 a, b, c=?​

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Salut!

[tex]a + b + c = 525 \\ c = 2b \\ b = 2a \rightarrow \: c =2(2a) = 4a \\ \\ a + 2a + 4a = 525 \\ 7a = 525 \: \: | \div 7 \\ \boxed{a = 75} \\ b = 2 \times 75 \: \rightarrow \: \boxed{b = 150} \\ c = 2 \times 150 \rightarrow \: \boxed{ c = 300}[/tex]

[tex]\it a+b+c=525\ \ \ \ \ \ (1)\\ \\ b=2a\ \ \ \ \ \ (2)\\ \\ c=2b=2\cdot2a=4a\ \ \ \(3)\\ \\ (1),\ (2),\ (3) \Rightarrow a+2a+4a=525 \Rightarrow 7a=525\bigg|_{:7} \Rightarrow a=75\\ \\ \\ b=2\cdot75=150;\ \ \ \ c=4\cdot75=300[/tex]