If the current age is considered as x, 13 years ago he was x-13 and in 11 years he will be x+11:

asked Apr 27, 2023 133k views

14 votes

by Slobo

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7 votes

Answer:

Therefore, Peter is 21 years old.

Explanation:

$\bf{ x+11=((x-13)^2)/(2) \ \Longrightarrow \ 2x+22=x^2-26x+169 }$

$\bf{ 0=x^2-28x+147=(x-21)(x+7) }$

Clint Powell answered May 3, 2023

6.7k points

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