Q
QuestionMathematics

Romeo paid $380.75 in car repairs. The sales tax rate is 7.5%. What is a reasonable estimate for the total Romeo paid to repair his car? $404.83 $409.13 $416.60 $422.04
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Answer

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Step 1
: First, we need to find the amount of the car repair bill before sales tax was added.

&= \frac{$380.75}{1.075}\
To do this, we will divide the total amount paid by (1 + sales tax rate). &\approx $354.13 \end{align*}

Step 2
: Now that we have an estimate for the pre-tax amount, we can calculate the estimated sales tax by subtracting the pre-tax amount from the total amount paid.

&= $380.75 - $354.13\
\text{Estimated sales tax} &= \boxed{\text{Total amount paid} - \text{Pre-tax amount}}\ &\approx $26.62 \end{align*}

Final Answer

The reasonable estimate for the total amount Romeo paid to repair his car is $409.13.