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The ratio of red collars to black collars sold at one store is 9 to 10. in one month 30 black collars were sold. is 57 a reasonable number for the total number of red and black collars sold that month.
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The ratio of red collars to black collars sold at one store is 9 to 10. in one month 30 black collars were sold. is 57 a reasonable number for the total number of red and black collars sold that month. explain

User Vemoxy
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27 red collars. 57-30=27
User Chatman
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