SOLUTION: A cup of lemonade is made by mixing frozen lemonade concentrate with water in the ratio of 1 : 3. How many cans of concentrate are needed to prepare 12 cups of lemonade?

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Question 684163: A cup of lemonade is made by mixing frozen lemonade concentrate with water in the ratio of 1 : 3. How many cans of concentrate are needed to prepare 12 cups of lemonade?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+1%2F3+ = ( lemon concentrate ) / ( water )
+1+%2F+%28+1+%2B+3+%29+ = ( lemon concentrate ) / ( 1 cup of lemonade )
+1%2F4+ = ( lemon concentrate ) / ( 1 cup of lemonade )
+1%2F4+=+x%2F12+
+x+=+3+
I think this means that 3 cups of concentrate are needed to
make 12 cups of lemonade. I don't know how many "cans"
are in a cup, so that has me confused.
You might get another opinion.