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Maggie's brother is 3 years younger than twice her age. The sum of their age is 24. How old is Maggie?

Maggie's brother is 3 years younger than twice her age. The sum of their age is 24. How-example-1
User Denizt
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She must be 9. 9x2=18. 18-3=15. 15+9=24. so she is 9, and her brother is 15.
User Pwnosaurus
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