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How many roses and carnations were there?

 

 Aug 17, 2020
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r + c = 20      or     c = 20 - r     use this for 'c' in the second equation

 

.75 r  +  .5 (20 - r) = 12.00    now you can easily  solve for 'r'   then  c = 20 - r

 Aug 17, 2020

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