math 156

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Tasha, Tess and Trudy need to spend a total of 60hrs. over the next year to complete a project in their appartment. How much time will Trudy spend if they have agreed to split the time in the ratio 7 to 4 to 9, respectivley?

I have no idea how to even start.

  • math 156 -

    Of 20 hours, Tasha, tess, and Trudy will spend 7;4;and 9 hours each.

    How many 20 hrs are in 60?

  • math 156 -

    30 hours

  • math 156 -

    No. There are three 20's in 60.

    so trudy= 3*9

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