A mixture contains 4 fluid ounces of water for every 3 fluid ounces of blue food coloring How much blue food coloring needs to be added to 12 fluid ounces of water?
Answer: Let x be the amount of blue food coloring to be added to 12 fluid ounces of water.
Therefore, we have:
![(4)/(12)=(3)/(x)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/2vswz8xlqdfks8ynpmzd2q1cww0ty2q8z4.png)
![4x=3 * 12](https://img.qammunity.org/2019/formulas/mathematics/middle-school/8qcxdk57obmwim8292a75mlna8zhijfi6i.png)
![4x=36](https://img.qammunity.org/2019/formulas/mathematics/middle-school/2oirmewcy7fj9ixrm8g7lstj7rp0rpwugo.png)
![x=(36)/(4) =9](https://img.qammunity.org/2019/formulas/mathematics/middle-school/sav9eqt22nm63lqyzwssg7okv8tvop2gae.png)
Therefore, 9 ounces of blue food coloring needs to be added to 12 fluid ounces of water.