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You make punch for a party. The ratio og ginger ale to fruit juice is 8 cups to 3 cups. You decide to add 4 more cups of ginger ale. How many more cupsof fruit juice do you need to keep the correct ratio.



Answer :

To get the answer we can use proportion
8 ginger ----------------- 3 fruit
12 ginger ----------------x
Crossmultiply now
8x=12*3                /:8
x=[tex] \frac{12*3}{8} [/tex]
x=[tex] \frac{36}{8} \\ x=4.5[/tex]
To not change ratio we have to have 4.5 cups of fruilt juice. We initialy had 3, so we have to add 1.5 cup of fruit juice.

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