SOLUTION: Kimberly is twice as old as Ryan. In 4 years, she will be 7 years older than Ryan. How old is Kimberly now?

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Question 224876: Kimberly is twice as old as Ryan. In 4 years, she will be 7 years older than Ryan. How old is Kimberly now?
Answer by wowkids38(4) About Me  (Show Source):
You can put this solution on YOUR website!
2R=7+r
get the variable on one side
2=7+2R
subtract seven from both sides
-5=2r
Divide both sides by two
-2.5=r
so ryan is two and a half years old
2.5+7=9.5
so kidmberly is 9 and half years old