Respuesta :

Answer:

3 and 9

Step-by-step explanation:

let Peter's age be x then James is x + 6

The average of their ages is twice Peter's age, that is

[tex]\frac{x+x+6}{2}[/tex] = 2x

[tex]\frac{2x+6}{2}[/tex] = 2x

x + 3 = 2x ( subtract x from both sides )

3 = x

Then Peter is 3 years old and James is x + 6 = 3 + 6 = 9 years old

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