the music teacher is three years times as old as julia. in 12 years , she will be twice as old as julia. how old is julia?

Question

the music teacher is three years times as old as julia. in 12 years , she will be twice as old as julia. how old is julia?

Answer 1

X = 3J

 

 

X+12 = 2*(j+12)

 

3j + 12 = 2(j+12)

 

3j + 12 = 2j + 24

 

3j + 12 - 2j - 24 = 0

 

j - 12 = 0

 

j=12

 

Julia is 12 and her music teacher is 36.

In 12 years, Julia will be 24 while the music teacher

shall be 48, which is twice as old.

 

Julia is 12