SOLUTION: If leo adds his current age to the age he will be next year on this date, the sum is 15 years. How old will leo be 12 years from today?

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Question 1014953: If leo adds his current age to the age he will be next year on this date, the sum is 15 years. How old will leo be 12 years from today?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
Let L = Leo's current age.
Then his age next year on this date would be L+1.
Hence L + L+1 = 15, or 2L +1 = 15, or 2L = 14, or L = 7.
Thus his age 12 years from today is 19.