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Mathematics 11 Online
OpenStudy (anonymous):

You make 72 cookies for a bake sale. This is 20% of the cookies at the bake sale. How many cookies are at the bake sale?

OpenStudy (anonymous):

Is it 360?

OpenStudy (anonymous):

Set up a proportion: 72=.2 multiply both sides by 5 to get 1 or 100% on the right hand side 72*5 = 360

OpenStudy (anonymous):

That's what i got

OpenStudy (anonymous):

That's how I did it, also by doing,\[72 \div .20 = 360\]

OpenStudy (anonymous):

Thanks! :D

OpenStudy (oaktree):

That's right.

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