John Is Trying to Decide How to Divide His Time

question 72

Multiple Choice

John is trying to decide how to divide his time between his job as a stocker in the local grocery store,which pays $7 per hour for as many hours as he chooses to work,and cleaning windows for the businesses downtown.He makes $2 for every window he cleans.John is indifferent between the two tasks,and the number of windows he can clean depends on how many hours he spends cleaning in a day,as shown in the table below: $$\begin{array} { | l | l | } \hline \begin{array} { l } \text { Cleaning time } \\\text { (hr/day) }\end{array} & \begin{array} { l } \text { Total numbers of } \\\text { windows cleaned }\end{array} \\\hline 0 & 0 \\\hline 1 & 7 \\\hline 2 & 11 \\\hline 3 & 14 \\\hline 4 & 16 \\\hline 5 & 17 \\\hline\end{array}$$
What is John's reservation price for the 4^th and 5^th hours spent cleaning windows.

• A) $7 and $7.50 respectively.
• B) $2 and $3.50 respectively.
• C) $3.50 and $7 respectively.
• D) $11 and $14 respectively.

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