SOLUTION: Jess is twice his brother's age. The sum of thier ages is 21. How old is jess and his brother ?

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Question 50610This question is from textbook new progress in mathematics
: Jess is twice his brother's age. The sum of thier ages is 21. How old is jess and his brother ? This question is from textbook new progress in mathematics

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Jess is twice his brother's age. The sum of thier ages is 21. How old is jess and his brother ?
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NOW Data:
Brother's age = x ; Jess's age = 2x
EQUATION:
x+2x=21
3x=21
x=7 (Brother's age)
2x=14 (Jess's age)
Cheers,
Stan H.