SOLUTION: Terri is two years older than Ginnie. Joan is twice Ginnie's age. How old is Ginnie if the sum of the squares of the three ages is 420?

SOLUTION: Terri is two years older than Ginnie. Joan is twice Ginnie's age. How old is Ginnie if the sum of the squares of the three ages is 420?

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Question 410283: Terri is two years older than Ginnie. Joan is twice Ginnie's age. How old is Ginnie if the sum of the squares of the three ages is 420?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = Terri's age
Let = Ginnie's age
Let = Joan's age
given:

--------------------

Use quadratic formula

and

and

Ginnie is 8 yrs old
check answer:

OK
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