3) Steve is three times as old as Tracy. In four years he will be twice as old as she will be, How old is each now?

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Q: Solve the following problems 1. From the ten digits 0,12,3,4,5,6,7,8,9, how many four-digit numbers…

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Q: Can you do this problem?

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A: It is an important part of statistics . It is widely used .

Q: am three times as old as my son.Five years later,I shall be two and half times as old as my son.How…

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