Bar Charts
Data Interpretation

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Common Information

The bar graph given below shows the foreign exchange reserves of a country (in million US $$$) from 1991-1992 to 1998–1999.

Common information image for Bar Charts, Data Interpretation:1037-1

Q.

Common Information Question: 3/5

For which year, the percent increase of foreign exchange reserves over the previous year, is the highest?

 A.

1992-93

 B.

1993-94

 C.

1994-95

 D.

1996-97

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Solution:
Option(A) is correct

There is an increase in foreign exchange reserves during the years 1992 - 1993, 1994 - 1995, 1996 - 1997, 1997 - 1998 as compared to previous year (as shown by bar-graph).

The percentage increase in reserves during these years compared to previous year are:

\begin{align*}
\text{For 1992 - 1993,}\\ 
&= \left[\dfrac{3720 - 2640}{ 2640} × 100\right]\%\\
&= 40.91\%. \\
\text{For 1994 - 1995,}\\ 
&= \left[\dfrac{3360 - 2520}{ 2520} × 100\right]\% \\
&= 33.33\%. \\
\text{For 1996 - 1997,} \\
&= \left[\dfrac{4320 - 3120}{ 3120} × 100\right]\% \\
&= 38.46\%.\\
\text{For 1997 - 1998,}\\
& = \left[\dfrac{5040 - 4320}{ 4320} × 100\right]\% \\
&= 16.67\%.
\end{align*}

Clearly, the percentage increase over previous year is highest for 1992 - 1993


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