Question

Peyton is three years younger than Justin. Matt is four times as old as Peyton. If you add together the ages of Justin, Peyton and Matt, the total comes to 39 years. How old are Justin, Peyton and Matt?

Answer 1

Peyton is 28 years old

Justin is 7 years old 

Matt is 4 years old 

Answer 2

Let the age of Justin be x years .

And Pyton is three years younger than Justin, therefore Peyton age is

$(x-3)years$

And Matt is four times as old as Peyton, therefore Matt age is

$4(x-3) years$

And it is given that

$x+x-3+4(x-3)=39$

$x+x-3+4x-12=39 \\ 6x-15=39 \\ 6x=54 \\ x =9 years$

Therefore , Justin is 9 years old, Peyton is 6 years old and Matt is 24 years old .