# Easy Bar Charts Solved QuestionData Interpretation Discussion

Common Information

Study the bar chart and answer the question based on it.

 Q. Common Information Question: 2/5 The average production of 1996 and 1997 was exactly equal to the average production of which of the following pairs of years?
 ✖ A. 2000 and 2001 ✖ B. 1999 and 2000 ✖ C. 1998 and 2000 ✔ D. 1995 and 2001

Solution:
Option(D) is correct

Average production (in 10000 tonnes) of 1996 and 1997:

$=\dfrac{40 + 60}{ 2}= 50$

We shall find the average production (in 10000 tonnes) for each of the given alternative pairs:

\begin{align*}
\text{2000 and 2001,}\\
&=\dfrac{50 + 75}{2}\\
&= 62.5\\
\text{1999 and 2000,}\\
&=\dfrac{65 + 50}{2}\\
&= 57.5\\
\text{1998 and 2000,}\\
&=\dfrac{45 + 50}{2}\\
&= 47.5\\
\text{1995 and 1999,}\\
&=\dfrac{25 + 65}{2}\\
&= 45 \\
\text{1995 and 2001,}\\
&=\dfrac{25 + 75}{2}\\
&= 50
\end{align*}

The average production of 1996 and 1997 is equal to the average production of 1995 and 2001