SOLUTION: Bill is twice as old as Mary. If he is exactly ten years older than Mary was last year, how old are Bill and Mary?
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Question 456570: Bill is twice as old as Mary. If he is exactly ten years older than Mary was last year, how old are Bill and Mary?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
b=2m
b=10+(m-1)
2m=10+m-1
2m=9+m
m=9
b=18
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