SOLUTION: A boy is 5 years old and his sisters is twice as old. When the boy is 8 years old, how old will his sister be?

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Question 275488: A boy is 5 years old and his sisters is twice as old. When the boy is 8 years old, how old will his sister be?
Answer by bobdabuildr(27) About Me  (Show Source):
You can put this solution on YOUR website!
If your question is written correctly, the girl is currently 10 years old (2*5) and in three years when the boy is 8, the girl will be 10+3, or thirteen.