The total money Janice earned from the garage sale was $320.
<h3>How to calculate Janice's earnings?</h3>
To calculate Janice's profit from the garage sale we must perform the following mathematical operations.
Based on the money she had left at the end we can calculate how much her total earnings were. To do this we multiply $80 by 2 to calculate half of her earnings as shown below:
Based on the above, we know that Janice had $160 after buying her bike that cost half of her total earnings. Therefore, to know the amount of her earnings we must multiply $160 by 2 as shown below:
Based on the above, it can be inferred that Janice's total earnings were $320.
Learn more about earnings in: brainly.com/question/1477138
Basically all kinds of scientific investigations involve observations in the beginning- based on the observations one makes the hypothesis, which then one tests with the help of experiments.
