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Brady recorded the number and color of cars in the parking lot. The shaded model represents the percent of white vehicles counted in the parking lot.






























































































































If Brady counted a total of 81 white cars, how many cars did he count in the parking lot?
A. 180
B. 100
C. 126
D. 36

Brady recorded the number and color of cars in the parking lot. The shaded model represents the percent of white vehicles counted in the parking lot.\newline\begin{tabular}{|l|l|l|l|l|l|l|l|l|l|}\newline\hline & & & & & & & & & \\\newline\hline & & & & & & & & & \\\newline\hline & & & & & & & & & \\\newline\hline & & & & & & & & & \\\newline\hline & & & & & & & & & \\\newline\hline & & & & & & & & & \\\newline\hline & & & & & & & & & \\\newline\hline & & & & & & & & & \\\newline\hline & & & & & & & & & \\\newline\hline & & & & & & & & & \\\newline\hline\newline\end{tabular}\newlineIf Brady counted a total of 8181 white cars, how many cars did he count in the parking lot?\newlineA. 180180\newlineB. 100100\newlineC. 126126\newlineD. 3636

Full solution

Q. Brady recorded the number and color of cars in the parking lot. The shaded model represents the percent of white vehicles counted in the parking lot.\newline\begin{tabular}{|l|l|l|l|l|l|l|l|l|l|}\newline\hline & & & & & & & & & \\\newline\hline & & & & & & & & & \\\newline\hline & & & & & & & & & \\\newline\hline & & & & & & & & & \\\newline\hline & & & & & & & & & \\\newline\hline & & & & & & & & & \\\newline\hline & & & & & & & & & \\\newline\hline & & & & & & & & & \\\newline\hline & & & & & & & & & \\\newline\hline & & & & & & & & & \\\newline\hline\newline\end{tabular}\newlineIf Brady counted a total of 8181 white cars, how many cars did he count in the parking lot?\newlineA. 180180\newlineB. 100100\newlineC. 126126\newlineD. 3636
  1. Identify part and whole: Identify the part and the whole from the problem. The part is the number of white cars, which is 8181. The whole is the total number of cars in the parking lot, which we need to find.
  2. Assume percentage: The shaded model represents the percent of white vehicles, but the problem doesn't state the percentage. We'll assume it's a common test percentage like 25%25\%, 50%50\%, 75%75\%, or 100%100\%. Let's go with 50%50\% for now.

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