SOLUTION: Ray is 39 years old. His age is 15 years more than twice his daughters age. How old is his daughter?

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Question 537593: Ray is 39 years old. His age is 15 years more than twice his daughters age.
How old is his daughter?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let d = Daughter's age
+39+=+2d+%2B+15+
+2d+=+39+-+15+
+2d+=+24+
+d+=+12+
His daughter is 12