SOLUTION: Mary is twice as older of her younger brother 4 years ago. When Mary is 18 years old, how young is her brother when the sum of Mary and her younger brother's age is 6,4 years ago.

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Question 1134651: Mary is twice as older of her younger brother 4 years ago. When Mary is 18 years old, how young is her brother when the sum of Mary and her younger brother's age is 6,4 years ago.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
"twice as older" makes no sense.