$$\begin{array} { | c | c | c | }
\hline { \text { Figure 1-1 } } \
\hline \begin{array} { c }
\text { Haurs } \
\text { Studying }
\end{array} & \begin{array} { c }
\text { Physics } \
\text { Scare }
\end{array} & \begin{array} { c }
\text { Gedlay } \
\text { Scare }
\end{array} \
\hline [ & 4 [ & 3 [ \
\hline 1 & 50 & 60 \
\hline 2 & 60 & 80 \
\hline 3 & 85 & 90 \
\hline 4 & 90 & 100 \
\hline
\end{array}$$
-Grant has four hours of time to divide between studying for a physics exam and a geology exam.Figure 1-1 shows his estimates of the grades (on a scale of 0 to 100)that he could earn from studying a particular number of hours on each subject.If he plans on spending three hours studying physics,what would be his opportunity cost of an additional hour studying physics?
A) 10 points on his geology exam
B) 20 points on his geology exam
C) 30 points on his geology exam
D) 25 points on his physics exam
E) 85 points on his physics exam

Question

$$\begin{array} { | c | c | c | } 
\hline { \text { Figure 1-1 } } \
\hline \begin{array} { c } 
\text { Haurs } \
\text { Studying }
\end{array} & \begin{array} { c } 
\text { Physics } \
\text { Scare }
\end{array} & \begin{array} { c } 
\text { Gedlay } \
\text { Scare }
\end{array} \
\hline [ & 4 [ & 3 [ \
\hline 1 & 50 & 60 \
\hline 2 & 60 & 80 \
\hline 3 & 85 & 90 \
\hline 4 & 90 & 100 \
\hline
\end{array}$$
-Grant has four hours of time to divide between studying for a physics exam and a geology exam.Figure 1-1 shows his estimates of the grades (on a scale of 0 to 100)that he could earn from studying a particular number of hours on each subject.If he plans on spending three hours studying physics,what would be his opportunity cost of an additional hour studying physics?
A) 10 points on his geology exam
B) 20 points on his geology exam
C) 30 points on his geology exam
D) 25 points on his physics exam
E) 85 points on his physics exam

Quizplus · Accepted Answer

The opportunity cost of an additional hour studying physics is the grade he would have earned on his geology exam if he had spent that hour studying geology instead. According to the table, if he spends three hours studying physics, he will earn a grade of 85 on his physics exam and a grade of 90 on his geology exam. If he spends four hours studying physics, he will earn a grade of 90 on his physics exam and a grade of 100 on his geology exam. Therefore, the opportunity cost of an additional hour studying physics is 10 points on his geology exam.

-Grant Has Four Hours of Time to Divide Between Studying