The table below shows hypothetical per- minute cell phone charges for "pay- and- talk" service over several years. $$\begin{array}{l}
\begin{array} { | l | l | }
\hline 2005 & 0.55 \
\hline 2006 & 0.50 \
\hline 2007 & 0.40 \
\hline 2008 & 0.35 \
\hline 2009 & 0.25 \
\hline
\end{array}\
\text { TABLE 2- } 2
\end{array}$$
-Refer to Table 2- 2. Assume that 2005 is used as the base year, with the index number = 100. What is the percentage change in the per- minute charge from 2008 to 2009?
A) - 25.0%
B) - 10.0%
C) - 35.0%
D) - 71.4%
E) - 28.6%

Question

The table below shows hypothetical per- minute cell phone charges for "pay- and- talk" service over several years. $$\begin{array}{l}
\begin{array} { | l | l | } 
\hline 2005 & 0.55 \
\hline 2006 & 0.50 \
\hline 2007 & 0.40 \
\hline 2008 & 0.35 \
\hline 2009 & 0.25 \
\hline
\end{array}\
\text { TABLE 2- } 2
\end{array}$$
-Refer to Table 2- 2. Assume that 2005 is used as the base year, with the index number = 100. What is the percentage change in the per- minute charge from 2008 to 2009?
A) - 25.0%
B) - 10.0%
C) - 35.0%
D) - 71.4%
E) - 28.6%

Quizplus · Accepted Answer

The percentage change from 2008 to 2009 is calculated as $\frac{0.25 - 0.35}{0.35} \times 100 = -28.6\%$.

The Table Below Shows Hypothetical Per- Minute Cell Phone Charges