Question

Maria is going to purchase cranberry juise and soda water for a new fruit punch recipe. The recipe calls for 3 times as many bottles of soda water as cramberry juice. If she has, what is the most bottles of cranberry juice she can buy if cranberry juise cost 2.90 per bottle and soda water costs 1.80 per bottle

Answer 1

Let +n+ = number of bottles of cranberry juice needed
+2n+ = number of bottles of ginger ale needed
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+3.2n+%2B+.9%2A%28+2n+%29+=+20+
+3.2n+%2B+1.8n+=+20+
+32n+%2B+18n+=+200+
+50n+=+200+
+n+=+4+
and
+2n+=+8+
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The most bottles of cranberry juice is 4