SOLUTION: andrea and alexis are twins. they have a brother who is eleven years older than they are and a brother who is four years younger. the sum of the ages of all four children is 35. wr

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: andrea and alexis are twins. they have a brother who is eleven years older than they are and a brother who is four years younger. the sum of the ages of all four children is 35. wr      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 767636: andrea and alexis are twins. they have a brother who is eleven years older than they are and a brother who is four years younger. the sum of the ages of all four children is 35. write an equation to finds sisters age.
Answer by Cromlix(4381) About Me  (Show Source):
You can put this solution on YOUR website!
Andrea and Alexis age = x
Older brother = 11 + x
Younger brother = x - 4)
Total: x + x + (11 + x) + (x - 4) = 35
x + x + 11 + x + x - 4 = 35
4x + 7 = 35
4x = 28
x = 7
Sisters' ages = 7 years each
Younger brother = 3 years
Older brother = 18 years
Hope this helps.
:-)