Christina 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 received an $18 tip for hosting a birthday party that day?

Answer 1

To find out how many hours Christina needs to work, we start by determining her total income requirement after receiving the tip.

1. Calculate the total amount she needs to make after the tip: \[ \text{Amount needed} = \text{Car insurance} - \text{Tip} = 130 - 18 = 112 \]

2. Determine the hourly wage she earns: Christina makes $14 per hour.

3. Calculate the number of hours she needs to work: We use the formula: \[ \text{Hours needed} = \frac{\text{Total amount needed}}{\text{Hourly wage}} = \frac{112}{14} = 8 \]

Therefore, Christina needs to work 8 hours to make the amount required for her car insurance after her tip.