Jack is 2 2 times as old as lacy. 4 4 years ago the sum of their ages was 31 31. how old are they now?

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Question:

Jack is 2 2 times as old as lacy. 4 4 years ago the sum of their ages was 31 31. how old are they now?

Answers

Lacey is 7 years Jack is 21 years 

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