SOLUTION: At a retirement home, the sum of Three Sisters (Karen Sharon and Aaron) ages is consecutive. The sum of their ages is 207. what is the age of the oldest sister?

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Question 1070479: At a retirement home, the sum of Three Sisters (Karen Sharon and Aaron) ages is consecutive. The sum of their ages is 207. what is the age of the oldest sister?
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
x, the youngest sister;

x%2Bx%2B1%2Bx%2B2=207
3x%2B3=207

3x=204

highlight_green%28x=68%29

Their ages: 68, 69, 70.
Oldest sister is 70 years.



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ALTERNATIVE
The question asks for the age of the Oldest sister.
Let x be age of the oldest sister.
%28x-2%29%2B%28x-1%29%2Bx=207
x-2%2Bx-1%2Bx=207
3x-3=207
3x=210
highlight%28highlight%28x=70%29%29