SOLUTION: The five Garcia cousins were born five years apart, or at five year intervals, with no multiple births. If the sum of their ages is 65, how old is the oldest? [COMMENTS & HINTS:

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Question 310764: The five Garcia cousins were born five years apart, or at five year intervals, with no multiple births. If the sum of their ages is 65, how old is the oldest? [COMMENTS & HINTS: A formal algebraic solution is expected.]
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let x = the age of the youngest
The sum of their ages is x+%2B+x+%2B+5+%2B+x+%2B+10+%2B+x+%2B+15+%2B+x+%2B+20+=+65
5x+%2B+50+=+65
5x+=+15
x+=+3
x+%2B+20+=+23
The oldest is 23