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.
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.
