SOLUTION: Christ is 2 years younger than Jim. Their sum age is 30. Could you help me how to write this in a equation and reason why.

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: Christ is 2 years younger than Jim. Their sum age is 30. Could you help me how to write this in a equation and reason why.       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 1039595: Christ is 2 years younger than Jim. Their sum age is 30. Could you help me how to write this in a equation and reason why.

Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
.
J=Jim's age; C=Christ's age=J-2;
J+C=30 . The sum of their ages is 30
J+(J-2)=30 . Substitute (J-2) for C
2J-2=30
2J=32
J=16
.
C=J-2=16-2=14
.