Analyzing Population Data for City D

The question asks us to find the difference between the number of literate males and illiterate males in City 'D', given a ratio of literate to illiterate males and the population break-up data from the provided table.

Understanding the Population Table

Let's first examine the data given for City 'D' in the table:

For City 'D', we have the following information:

• Males: 45% of total population
• Females: 3600
• Transgenders: 25% of total population

Calculating Total Population of City D

The total population of any city is 100%. In City D, the population is divided among males, females, and transgenders. We have the percentages for males and transgenders. The remaining percentage must be for females.

Percentage of Females = 100% - (Percentage of Males + Percentage of Transgenders)

Percentage of Females in City D = \(100\% - (45\% + 25\%)\)

Percentage of Females in City D = \(100\% - 70\%\)

Percentage of Females in City D = \(30\%\)

We are given that the number of females in City D is 3600. This number corresponds to 30% of the total population of City D.

Let the total population of City D be \(P_D\). Then,

\(30\%\) of \(P_D = 3600\)

\(\frac{30}{100} \times P_D = 3600\)

\(P_D = \frac{3600 \times 100}{30}\)

\(P_D = \frac{360000}{30}\)

\(P_D = 12000\)

So, the total population of City D is 12000.

Calculating Number of Males in City D

From the table, we know that males constitute 45% of the total population of City D.

Number of Males in City D = \(45\%\) of Total Population of City D

Number of Males = \(45\%\) of 12000

Number of Males = \(\frac{45}{100} \times 12000\)

Number of Males = \(45 \times 120\)

Number of Males = \(5400\)

There are 5400 males in City D.

Calculating Literate and Illiterate Males in City D

The question states that the ratio of literate males to illiterate males in City D is 11 : 7.

This means that for every 11 literate males, there are 7 illiterate males among the male population of City D.

The total number of parts in the ratio is \(11 + 7 = 18\) parts.

These 18 parts represent the total number of males in City D, which we found to be 5400.

Value of one ratio part = \(\frac{\text{Total Number of Males}}{\text{Total Ratio Parts}}\)

Value of one ratio part = \(\frac{5400}{18}\)

Value of one ratio part = \(300\)

Now we can find the number of literate and illiterate males:

• Number of Literate Males = \(11 \times \text{Value of one ratio part}\) = \(11 \times 300 = 3300\)
• Number of Illiterate Males = \(7 \times \text{Value of one ratio part}\) = \(7 \times 300 = 2100\)

Let's verify: \(3300 + 2100 = 5400\), which is the total number of males in City D. The numbers match.

Calculating the Difference

The question asks for the difference between the number of literate males and the number of illiterate males of City 'D'.

Difference = Number of Literate Males - Number of Illiterate Males

Difference = \(3300 - 2100\)

Difference = \(1200\)

The difference between the number of literate males and illiterate males in City D is 1200.

Revision Table: City D Population Analysis

Additional Information: Data Interpretation Tips

• Always start by carefully reading the question and understanding what is being asked.
• Examine the provided table or chart to understand the data it presents. Note units (numbers, percentages, ratios) and categories.
• Identify the specific data relevant to the question (in this case, City D's population breakdown).
• Look for relationships between different data points (e.g., percentages summing to 100%, ratios representing parts of a whole).
• Use the given information to calculate missing values step-by-step.
• Break down complex problems into smaller, manageable calculations.
• Pay attention to ratios; understand that they represent proportions of a total.
• Double-check your calculations to avoid errors.
• Ensure your final answer addresses the specific question asked (e.g., difference, total, ratio).