Since you have already saved $103.25, substract that amount from the total cost of the car to find the remaining amount of money that you have to earn:
[tex]2550.99-103.25=2447.74[/tex]Let h be the amount of hours that you need to work to earn 2447.74. Since you are paid $11.35 for each hour, after h hours you would have won:
[tex]11.35h[/tex]For you to be able to buy that car, that amount must be equal to $2447.74:
[tex]11.35h=2447.74[/tex]Divide both sides by 11.35 to isolate h:
[tex]\begin{gathered} h=\frac{2447.74}{11.35} \\ \Rightarrow h=215.6599\ldots \end{gathered}[/tex]Therefore, you must work for approximately 215.66 hours to buy your fist car of $2550.99