SOLUTION: john is 2/3 as old as his sister. His sister is 30 years old. How old is john

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Question 276513: john is 2/3 as old as his sister. His sister is 30 years old. How old is john
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
2/3*30=60/3=20 years old for John.