Given,
Amount spend on gas is $35/week.
Amount spend on payment is $260/month.
Amount spend on insurance is $400/6 month.
Amount spend on oil is $25/ 3 month.
Required
The monthly car expenses.
The monthly car expenses are,
![\begin{gathered} Monthly\text{ expense=30}*(35)/(7)+260+(400)/(6)+(25)/(3) \\ =150+260+66.67+8.33 \\ =485 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/myjlsy4xo0egumf1csyvwkje24ebuqzku2.png)
Hence, the expense of the car is $485.