Answer:
The cost of each candy bar is $1.5.
Explanation:
Consider the provided information.
You set a personal goal of raising $200 for your school and met that goal. You sold a total of 120 candy bars and one neighbor gave you a 20 donation without taking any candy bars.
Let the cost of candy bars represented by x.
You sold a total of 120 candy bars.
The cost of 120 candy bars is: 120x
Your neighbor gave you a $20 donation and you met that goal.
Therefore, the required equation will be:
![120x+20=200](https://img.qammunity.org/2020/formulas/mathematics/middle-school/z12ddgtyb5cacbdryk4paf13qzvyq4yxtm.png)
Now solve the above equation as shown below:
![120x+20=200](https://img.qammunity.org/2020/formulas/mathematics/middle-school/z12ddgtyb5cacbdryk4paf13qzvyq4yxtm.png)
![120x=200-20](https://img.qammunity.org/2020/formulas/mathematics/middle-school/ezgcovok4odyhxcuhqkc4r1hghm2bcnn0d.png)
![120x=180](https://img.qammunity.org/2020/formulas/mathematics/middle-school/v9o1bu5ar4iyebeqwwyvqzq74gghe4tk50.png)
![(120x)/(120)=(180)/(120)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/k9fd9n9867cotnppjkb93ovllwim0k0gcr.png)
![x=1.5](https://img.qammunity.org/2020/formulas/mathematics/middle-school/3uqbygpipxdumgtlclptnc72dl1bze0qq6.png)
Hence, the cost of each candy bar is $1.5.