Question

Justin is 2 years older than one third Marcella’s age. Aimee is four years younger than 2times Justin’s age. Define a variable and write an expression to represent Justin’s age. Then find Justine’s age and Aimee’s age if Marcella is 63 years old.

Answer 1

Let's assume

Marcella’s age is x

now, we are given

Justin is 2 years older than one third Marcella’s age

so, Justin's age will be

$=2+\frac{1}{3} x$

Let's assume Justin's age is J

so, we get

$J=2+\frac{1}{3} x$

Aimee is four years younger than 2times Justin’s age

so,

Aimee's age will be

$=2J-4$

now, we can plug J

$A=2*(2+\frac{1}{3} x)-4$

now, we are given

Marcella is 63 years old

so, x=63

we can plug x=63 and find A

$A=2*(2+\frac{1}{3} *63)-4$

$A=42$

so,

Aimee's age is 42 years

$J=2+\frac{1}{3} x$

now, we can plug x=63

$J=2+\frac{1}{3} *63$

$J=23$

so, Justin's age is 23 years