Understanding the City Population Data

The question asks us to calculate the difference between the male population of City E and the female population of City A based on the provided table showing the population breakdown by gender across five cities (A to E). The data is given in a mix of percentages and absolute numbers.

To find the required difference, we first need to determine the absolute numbers for the female population of City A and the male population of City E.

Calculating Female Population of City A

For City A, we are given the percentage of males (45%), females (30%), and the absolute number of transgenders (2000). The total percentage for males and females is the sum of their individual percentages:

Percentage of Males and Females in City A = 45% + 30% = 75%

Since the percentages for all three categories (Males, Females, Transgenders) must add up to 100%, the percentage represented by the transgender population is:

Percentage of Transgenders in City A = 100% - Percentage of Males and Females

Percentage of Transgenders in City A = 100% - 75% = 25%

We know that the number of transgenders in City A is 2000, which corresponds to 25% of the total population of City A. We can use this information to find the total population of City A:

If 25% of Total Population of City A = 2000

Then, 1% of Total Population of City A $= \frac{2000}{25} = 80$

Total Population of City A = 100% = $80 \times 100 = 8000$

Now that we have the total population of City A, we can calculate the number of females, which is 30% of the total population:

Female Population of City A = 30% of 8000

Female Population of City A $= \frac{30}{100} \times 8000 = 0.30 \times 8000 = 2400$

Calculating Male Population of City E

For City E, we are given the percentage of males (38%), females (32%), and the absolute number of transgenders (4200). Similar to City A, we find the total percentage for males and females:

Percentage of Males and Females in City E = 38% + 32% = 70%

The percentage represented by the transgender population is:

Percentage of Transgenders in City E = 100% - Percentage of Males and Females

Percentage of Transgenders in City E = 100% - 70% = 30%

We know that the number of transgenders in City E is 4200, which corresponds to 30% of the total population of City E. We can use this to find the total population of City E:

If 30% of Total Population of City E = 4200

Then, 1% of Total Population of City E $= \frac{4200}{30} = 140$

Total Population of City E = 100% = $140 \times 100 = 14000$

Now we can calculate the number of males in City E, which is 38% of the total population:

Male Population of City E = 38% of 14000

Male Population of City E $= \frac{38}{100} \times 14000 = 0.38 \times 14000 = 5320$

Finding the Difference in Population

The question asks how much more the male population of City E is than the female population of City A. We find this by subtracting the female population of City A from the male population of City E.

Difference = Male Population of City E - Female Population of City A

Difference = $5320 - 2400 = 2920$

Therefore, the male population of City E is 2920 more than the female population of City A.

Revision Table: Key Calculations

Additional Information: Data Interpretation Tips

Data interpretation questions often involve analyzing tables, charts, or graphs to extract relevant information and perform calculations. Here are some general tips:

• Read the question carefully to understand exactly what is being asked.
• Scan the table or chart to get an overview of the data presented.
• Identify the specific data points needed for the calculation.
• Pay attention to units (percentages, absolute numbers, ratios, etc.).
• Break down complex calculations into smaller steps.
• Double-check your calculations, especially percentages and proportions.
• When dealing with mixed data types (like percentages and numbers), first find a common ground, usually by calculating the total or a specific absolute value that corresponds to a known percentage.