Posted by Rmz on Wednesday, December 9, 2009 at 4:00pm.
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  bobpursley, Wednesday, December 9, 2009 at 4:03pm
Of 20 hours, Tasha, tess, and Trudy will spend 7;4;and 9 hours each.
How many 20 hrs are in 60?

math 156  Rmz, Wednesday, December 9, 2009 at 4:07pm
30 hours

math 156  bobpursley, Wednesday, December 9, 2009 at 4:28pm
No. There are three 20's in 60.
so trudy= 3*9
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