SOLUTION: Ross is six years older than twice his sister Holly's age. The difference in their ages is 18 years. How old is Holly?

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Question 25060: Ross is six years older than twice his sister Holly's age. The difference in their ages is 18 years. How old is Holly?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Let Holly's age be "x".
Then Ross's age is "2x"
EQUATION:
Ross's age - Holly's age = 18
2x-x=18
x=18 (Hollys age)
Cheers,
Stan H.