



 
Hi Arlene, The subject line of your email was "Guess and Check". that is certainly the way I would solve this. Imagine that you can gather all the Whites and Sulphurs in North America in one place. In my diagram they are all inside the red dot in North America. Since there are 11 times as many outside North America, imagine they are gathered into 11 equal sized locations as illustrated in the diagram. There are 720 varieties in total in these locations. How many are in each location? Penny  


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