maggie’s brother is three years younger than twice her age the sum of their age is 24 how old is maggie

Question

maggie’s brother is three years younger than twice her age the sum of their age is 24 how old is maggie

Answer 1

Maggie's Age: x

Maggie's Brother Age: 2x - 3

x + (2x - 3) = 24

3x - 3 = 24

 

add 3 to both sides

 

3x = 27

 

divide by 3 on both sides

 

x = 9

 

Maggie: is 9 years old

 

Maggie's Brother is: 2x -3 (substitute 9 for x) 2(9) - 3

18- 3 = 15

 

Maggie's Brother: 15 years old