Question

Christiana makes $14 per hour working at the roller-skating rink. She needs to make $130 to pay her car insurance. How many hours should she work if she receives an $18 tip for hosting a birthday party that day?

Please show all of you work. You can use the E for math symbols or if you prefer using the photo icon to upload a photo of your work.

Answer 1

To find out how many hours Christiana needs to work to make enough money to pay her car insurance, we will follow these steps:

1. **Determine her total earnings needed**:
- Christiana needs $130 for her car insurance.

2. **Account for the tip**:
- She will receive an $18 tip for hosting a birthday party.
- Therefore, we should subtract this tip from the total amount needed to find out how much more she needs to earn through her hourly wage.
\[
\text{Amount needed} = \text{Total needed} - \text{Tip} = 130 - 18 = 112
\]

3. **Calculate the number of hours needed**:
- Christiana makes $14 per hour. To find out how many hours she needs to work to earn the remaining $112, we can use the formula:
\[
\text{Hours needed} = \frac{\text{Amount needed}}{\text{Hourly wage}} = \frac{112}{14}
\]
- Now we perform the calculation:
\[
\frac{112}{14} = 8
\]

So, Christiana needs to work **8 hours** to earn enough money for her car insurance after receiving the tip.