Analyzing IT Job Vacancies in Bangalore: 2009 vs 2019

The question asks us to find the difference in the number of job vacancies specifically for the city of Bangalore between the years 2019 and 2009, based on the provided data table.

Understanding the Provided Data

The table gives the percentage distribution of IT job vacancies across various Indian cities for two years, 2009 and 2019. It also provides the total number of vacancies for each of these years.

• Total vacancies in 2009: 5.4 lakhs
• Total vacancies in 2019: 8.6 lakhs

Let's look at the percentages for Bangalore from the table:

• Percentage of vacancies in Bangalore in 2009: 15%
• Percentage of vacancies in Bangalore in 2019: 22%

Calculating Vacancies in Bangalore for Each Year

To find the actual number of vacancies in Bangalore for each year, we need to multiply the total number of vacancies for that year by the percentage of vacancies allocated to Bangalore in that year.

Vacancies in Bangalore in 2009

The total number of vacancies in 2009 was 5.4 lakhs. We need to find 15% of this total.

First, convert lakhs to a standard number:

\( 5.4 \text{ lakhs} = 5.4 \times 100,000 = 540,000 \)

Now, calculate 15% of 540,000:

\( \text{Vacancies in Bangalore (2009)} = 15\% \text{ of } 540,000 \)

\( \text{Vacancies in Bangalore (2009)} = \frac{15}{100} \times 540,000 \)

\( \text{Vacancies in Bangalore (2009)} = 0.15 \times 540,000 \)

\( \text{Vacancies in Bangalore (2009)} = 81,000 \)

Vacancies in Bangalore in 2019

The total number of vacancies in 2019 was 8.6 lakhs. We need to find 22% of this total.

First, convert lakhs to a standard number:

\( 8.6 \text{ lakhs} = 8.6 \times 100,000 = 860,000 \)

Now, calculate 22% of 860,000:

\( \text{Vacancies in Bangalore (2019)} = 22\% \text{ of } 860,000 \)

\( \text{Vacancies in Bangalore (2019)} = \frac{22}{100} \times 860,000 \)

\( \text{Vacancies in Bangalore (2019)} = 0.22 \times 860,000 \)

\( \text{Vacancies in Bangalore (2019)} = 189,200 \)

Calculating the Difference in Bangalore Vacancies

The question asks for the difference between the number of vacancies in 2019 and 2009. This means we subtract the number of vacancies in 2009 from the number of vacancies in 2019.

\( \text{Difference} = \text{Vacancies in Bangalore (2019)} - \text{Vacancies in Bangalore (2009)} \)

\( \text{Difference} = 189,200 - 81,000 \)

\( \text{Difference} = 108,200 \)

The difference in the number of vacancies available in the city of Bangalore between the year 2019 and 2009 is 108,200.

Summary of Calculations

Revision Table: Key Concepts

Additional Information: Data Interpretation Tips

When working with data tables like this one, focus on understanding:

• The Table Title and Headings: These tell you what the data represents (e.g., job vacancies, cities, years, percentages).
• Units: Pay attention to units like '%' and 'lakhs'. Make sure to convert units consistently if necessary for calculations.
• Total vs. Percentage: Understand the difference between total values and percentage distributions. Percentages show proportions, while total values show the overall size.
• Specific Questions: Read the question carefully to identify exactly what is being asked (e.g., difference, sum, ratio, value for a specific city or year).

For percentage distribution problems, remember that the percentages for all categories within a single year should ideally add up to 100% (or very close due to rounding). In this table, adding percentages for 2009: 15+10+12+10+8+21+24 = 100%. For 2019: 22+8+6+18+10+20+16 = 100%. This confirms the percentages represent a full distribution.