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Mathematics 21 Online
OpenStudy (anonymous):

jack spends 1 1/2 as long on his homework as jill last week jill spent 6 1/2 hours doing homework how long did jack spend doing homework

OpenStudy (anonymous):

Same way as the last problem Jill=6.5 Jack=1.5xJill Jack=1.5x6.5=9.75

OpenStudy (anonymous):

last week jack spent 20 1/4 how long did jill spend doing hoework

OpenStudy (anonymous):

Is jack still 1.5xJill?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

Then Jack=1.5xJill=20.25 Divide to solve for Jill 20.25/1.5=13.5 hours=Jill

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