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?

Question

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.