Understanding the Question: Exports from a Bar Diagram

The question asks us to analyze a bar diagram showing the exports of gems and jewellery to ten different countries in the year 1991-1992. We need to find the approximate ratio of the sum of exports to the "bottom six countries" to the total exports to all ten countries.

First, let's carefully read the export values for each country from the bar diagram:

First, identify the bottom six countries from the bar diagram, which are those with the lowest export values. Reading from the bottom up, these are Germany (1.1), UK (1.6), Israel (1.6), Switzerland (1.6), Thailand (2.5), and UAE (3.3) Billion Rupees.

Next, calculate the sum of the exports to these bottom six countries.
Sum of exports to bottom six = 1.1 + 1.6 + 1.6 + 1.6 + 2.5 + 3.3 = 11.7 Billion Rupees.

Then, calculate the total exports to all the given countries. Summing the exports for all ten countries:
Total exports = 22.6 (USA) + 12.5 (Japan) + 12.1 (Belgium) + 10.6 (Hong Kong) + 3.3 (UAE) + 2.5 (Thailand) + 1.6 (Switzerland) + 1.6 (Israel) + 1.6 (UK) + 1.1 (Germany) = 69.5 Billion Rupees.

Finally, calculate the ratio of the sum of the exports to the bottom six countries to the total exports.
Ratio = (Sum of exports to bottom six) / (Total exports)
Ratio = 11.7 / 69.5

Now, calculate the approximate value of this ratio.
11.7 ÷ 69.5 ≈ 1/6

Additional Information: Reading Bar Diagrams

Bar diagrams are visual representations of data using bars of different heights or lengths. They are useful for comparing quantities across different categories. To read a bar diagram:

• Look at the title to understand what the diagram represents.
• Examine the axes. One axis usually shows the categories (like countries), and the other axis shows the measured value (like export value in Billion Rupees).
• Look at the scale on the value axis to understand the units and increments.
• For each category, find the top of the bar and read the corresponding value on the value axis.

In this question, the bar diagram allows us to quickly compare the export performance of different countries and extract the necessary numerical data for calculations like sums and ratios. Understanding how to accurately read values from bar diagrams is a fundamental skill in data interpretation.

When a question asks for an "approximate" ratio, it usually suggests that the calculated value may not exactly match any option, but will be very close to one of them. However, as seen in this problem, the approximation can sometimes involve a larger difference, possibly due to the source or nature of the question.