SOLUTION: Alvin is 13 years younger than elga. the sum of thier ages is 27 what is elga's age

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: Alvin is 13 years younger than elga. the sum of thier ages is 27 what is elga's age      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 1155798: Alvin is 13 years younger than elga. the sum of thier ages is 27 what is elga's age
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

let Alvin's ae be x and Ela's age y
if Alvin is 13 years younger than Elga, we have
x=y-13 ....eq.1
if the sum of their ages is 27, we have
x%2By=27.....eq.2

substitute x from eq.1

y-13%2By=27.....eq.2

2y=27%2B13
2y=40
y=20

Elga is 20 years old.