Table 1.1
$$\begin{array}{l}
\text { Table } 1.1\
\begin{array} { | l | l | }
\hline \text { Hours } & \text { Revenue } \
\hline 1 & 10 \
\hline 2 & 20 \
\hline 3 & 30 \
\hline 4 & 40 \
\hline 5 & 50 \
\hline
\end{array}
\end{array}$$
-Refer to Table 1.1. What is Sergio's marginal benefit if he tutors for four hours instead of two hours?
A) $50
B) $40
C) $30
D) $20
E) $10

Question

Table 1.1
 $$\begin{array}{l}
\text { Table } 1.1\
\begin{array} { | l | l | } 
\hline \text { Hours } & \text { Revenue } \
\hline 1 & 10 \
\hline 2 & 20 \
\hline 3 & 30 \
\hline 4 & 40 \
\hline 5 & 50 \
\hline
\end{array}
\end{array}$$
-Refer to Table 1.1. What is Sergio's marginal benefit if he tutors for four hours instead of two hours?
A) $50
B) $40
C) $30
D) $20
E) $10

Quizplus · Accepted Answer

Marginal benefit is the additional benefit gained by increasing an activity by one unit. Here, the marginal benefit of tutoring for four hours instead of two hours can be calculated by subtracting the revenue earned from tutoring for 2 hours from the revenue earned from tutoring for 4 hours:
Marginal benefit = Revenue from tutoring for 4 hours - Revenue from tutoring for 2 hours
= $40 - $20
= $20
Therefore, the correct answer is D) $20.

Table 11 -Refer to Table 1