Analyzing Gems and Jewellery Exports: The 1991-92 Ratio

This problem asks us to find the ratio of gems and jewellery exports to specific countries (Japan, Belgium, and Hong Kong) compared to the exports to all the other countries during the year 1991-92. We need to carefully read the provided bar diagram to get the necessary export values.

Understanding the Data from the Bar Diagram

A bar diagram visually represents data. In this case, each bar likely shows the export value (in Billion Rupees) for gems and jewellery to a particular country or group of countries in 1991-92. To solve this problem, we need to identify the bars corresponding to Japan, Belgium, Hong Kong, and the 'rest of the countries'. We then read the export value associated with the height of each of these bars.

Here's how to calculate the required ratio:

To calculate the required ratio, first, we identify the export values for Japan, Belgium, and Hong Kong from the bar diagram. These are 12.5, 12.1, and 10.6 Billion Rupees, respectively. The total exports to these three countries is the sum of these values: 12.5 + 12.1 + 10.6 = 35.2 Billion Rupees.

Next, we identify the export values for the rest of the countries shown in the diagram: USA (22.6), UAE (3.3), Thailand (2.5), Switzerland (1.6), Israel (1.6), UK (1.6), and Germany (1.1) Billion Rupees. The total exports to these countries is the sum: 22.6 + 3.3 + 2.5 + 1.6 + 1.6 + 1.6 + 1.1 = 34.3 Billion Rupees.

Finally, the ratio of the total exports to Japan, Belgium, and Hong Kong to the exports to the rest of the countries is calculated by dividing the first total by the second total: 35.2 / 34.3. If the ratio were expressed as X:Y, it would be 35.2:34.3, which is approximately 35:34.

The final answer is

35:34

Additional Information

Reading Bar Diagrams

When working with bar diagrams, always pay attention to:

• The title of the diagram: This tells you what the diagram is about (e.g., Gems and Jewellery Export).
• The axes labels: The horizontal axis (x-axis) and vertical axis (y-axis) explain what each bar represents (e.g., countries, years) and the unit of measurement (e.g., Billion Rupees).
• The scale: Look at the numbers on the axis showing the magnitude (usually the vertical axis) to understand how to read the height of each bar accurately.