Portman Company's activity for the first three months of 2013 are as follows: $\begin{array}{lll}&\text { Machine Hours }&\text { Electrical Cost }\
\text { January } & 2,100 & \$ 3,600 \
\text { February } & 2,600 & \$ 4,350 \
\text { March } & 2,900 & \$ 4,800
\end{array}$ Using the high-low method, how much is the cost per machine hour?
A)$1.50
B)$2.25
C)$1.69
D)$1.34

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The Answer of Portman Company's activity for the first three months of 2013 are as follows: $\begin{array}{lll}&\text { Machine Hours }&\text { Electrical Cost }\
\text { January } & 2,100 & \$ 3,600 \
\text { February } & 2,600 & \$ 4,350 \
\text { March } & 2,900 & \$ 4,800
\end{array}$ Using the high-low method, how much is the cost per machine hour?
A)$1.50
B)$2.25
C)$1.69
D)$1.34

Portman Company's Activity for the First Three Months of 2013