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Tom had some money. He spent $330 on books and 3/5 of the remainder on toys. After that, he had 1/4 as much money as he had first. How much money did Tom has left?

  • math -

    Let x = amount of money at first

    x - 330 - .60(x-330) = .25x

    Solve for x, then .25x.

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