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suzy is ten years older than Billy and next year she will be twice as old as Billy. How old is Suzy now? How old is Billy?

  • MATH - ,

    present age:
    Billy -- x
    Suzy -- x+10

    next year:
    Billy -- x+1
    Suzy --- x+11 , but at that time she will be twice as old as Billy ---> x+11 = 2(x+1)

    solve for x

  • MATH - ,

    Billy is 9 and Suzy is 19

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