SOLUTION: Twins Diana and Riana are each 6 years older than their younger brother Kyle. Together, their three ages total 21 years. How old is Kyle? I know that K+6 =twins K=Kyle

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: Twins Diana and Riana are each 6 years older than their younger brother Kyle. Together, their three ages total 21 years. How old is Kyle? I know that K+6 =twins K=Kyle       Log On

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Question 338480: Twins Diana and Riana are each 6 years older than their younger brother Kyle. Together, their three ages total 21 years. How old is Kyle?
I know that K+6 =twins
K=Kyle
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
x+x+6+x+6=21
3x+12=21
3x=9
x=3 Kyle
x+3=9 twins