math

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MS. Sue can you explain me the problem please

  • math -

    What part don't you understand?

    How long did Michelle sleep if she went to bed at 9:40 PM and got up at 7:20 AM.

    Math - Ms. Sue, Tuesday, February 7, 2012 at 10:08pm

    11:60 - 9:40 = 2:20

    2:20 + 7:20 = ?

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