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Question

The following table shows population of five villages A-E and percentage distribution of males (M), females (F) and transgenders (T) among them. Based on the data in the table, answer the questions.

Village - wise Distribution of Population

Village

Total Popluation

Distribution (%)

M

F

T

A

12,000

46%

(-)

22%

B

16,000

(-)

33%

27%

C

18,000

32%

36%

(-)

D

24,000

36%

(-)

20%

E

25,000

(-)

30%

25%

Note: In table (-) denotes missing value (%), which is to be computed whenever required. 

Find the ratio of population of transgenders in Village - C to population of males in Village - B.

The correct answer is

9 ∶ 10

Understanding the Population Distribution Problem

This problem requires us to analyze a table showing the population distribution in five different villages (A, B, C, D, E). The distribution is broken down into percentages of males (M), females (F), and transgenders (T). Some percentages are missing and need to be calculated first to solve the question.

The question specifically asks for the ratio of the population of transgenders in Village C to the population of males in Village B. To find this ratio, we need to calculate the actual number of transgenders in Village C and the number of males in Village B using the provided percentages and total populations.

Calculating Missing Percentages in Village Population Data

In each village, the percentages of males, females, and transgenders must add up to 100%. We can use this fact to find the missing percentage values.

  • Village B: The percentage of Males (M) is missing. We know F% = 33% and T% = 27%.
    M% = 100% - F% - T%
    M% = $100\% - 33\% - 27\%$
    M% = $100\% - 60\%$
    M% = $40\%$
  • Village C: The percentage of Transgenders (T) is missing. We know M% = 32% and F% = 36%.
    T% = 100% - M% - F%
    T% = $100\% - 32\% - 36\%$
    T% = $100\% - 68\%$
    T% = $32\%$

We have now found the required percentages: 40% males in Village B and 32% transgenders in Village C.

Calculating Specific Populations from the Table

Next, we calculate the actual number of people in the categories required for the ratio:

  • Transgender population in Village C:
    Total Population in Village C = 18,000
    Percentage of Transgenders in Village C = 32%
    Number of Transgenders in Village C = $32\%$ of $18,000$
    Number of Transgenders in Village C = $\frac{32}{100} \times 18,000$
    Number of Transgenders in Village C = $32 \times 180 = 5760$
  • Male population in Village B:
    Total Population in Village B = 16,000
    Percentage of Males in Village B = 40% (calculated earlier)
    Number of Males in Village B = $40\%$ of $16,000$
    Number of Males in Village B = $\frac{40}{100} \times 16,000$
    Number of Males in Village B = $40 \times 160 = 6400$

Finding the Ratio of Transgenders in Village C to Males in Village B

The question asks for the ratio of the population of transgenders in Village C to the population of males in Village B.

  • Ratio = (Transgender Population in Village C) : (Male Population in Village B)
  • Ratio = $5760 : 6400$

Now, we simplify the ratio:

$\frac{5760}{6400}$

We can divide both the numerator and the denominator by common factors. Both are divisible by 10:

$\frac{576}{640}$

Both numbers are divisible by 64:

  • $576 = 9 \times 64$
  • $640 = 10 \times 64$

So, the ratio simplifies to:

$\frac{9}{10}$

Or written as a ratio:

$9 : 10$

Final Answer Derivation

The calculated ratio of the population of transgenders in Village C to the population of males in Village B is 9:10.

Village Total Population Distribution (%) M Distribution (%) F Distribution (%) T Calculated T Pop (C) Calculated M Pop (B)
A 12,000 46% - 22% - -
B 16,000 40% 33% 27% - 6400
C 18,000 32% 36% 32% 5760 -
D 24,000 36% - 20% - -
E 25,000 - 30% 25% - -

Revision Table: Key Calculations Review

Calculation Village Details Result
Missing M% B $100\% - 33\% - 27\%$ $40\%$
Missing T% C $100\% - 32\% - 36\%$ $32\%$
Transgender Pop C $32\%$ of $18,000 = \frac{32}{100} \times 18,000$ $5760$
Male Pop B $40\%$ of $16,000 = \frac{40}{100} \times 16,000$ $6400$
Ratio T(C) : M(B) C and B $5760 : 6400 = \frac{5760}{6400}$ $9 : 10$

Additional Information: Data Interpretation and Ratios

Data interpretation questions often involve tables or charts and require careful reading and calculation. When percentages are given, remember that the sum of percentages for all categories within a whole must be 100%. Ratios represent the relative size of two or more values. They can be written with a colon (:) or as a fraction. Simplifying a ratio means dividing both parts by their greatest common divisor to get the smallest possible whole numbers representing the same relationship.

In this problem, understanding how to calculate a percentage of a total number and how to simplify a ratio were key skills. Always check for missing values in tables and calculate them first if needed for the question.

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Important Questions from Tabulation

  1. The table shows District-wise data of a number of primary school teachers posted in schools of a city.

    Study the table and answer the question:

    District

    Male teachers

    Female teachers

    East

    1650

    2375

    North

    1075

    2651

    West

    1280

    1520

    South

    1170

    1085

    Central

    690

    859


    What is the difference between the total number of male teachers in the districts East, North, West taken together and the total number of female teachers in the districts East and South?
  2. Table shows income (in Rs. ) received by 4 employees of a company during the month of December 2020 and all their income sources.

    Source

    Amit

    Suresh

    Nitin

    Varun

    Salary

    35000

    38500

    29000

    42000

    Arrears

    6000

    6300

    5000

    7500

    Bonus

    1000

    1100

    1000

    1240

    Overtime

    1800

    1950

    1400

    1500


    What is the ratio of salary of Varun to his income other than salary?
  3. Study the table and answer the question:

    Income (Rs.)

    No. of persons

    Less than 200

    12

    Less than 250

    26

    Less than 300

    34

    Less than 350

    40

    Less than 400

    50


    What is the percentage of persons earning Rs. 250 or more?
  4. The following table shows the annual profit of a company (in Rs. lakh).

    2014-2015

    2015-2016

    2016-0217

    2017-2018

    2018-2019

    625

    690

    725

    775

    815

    The period which has the maximum percentage increase in profit over the previous year is:

  5. The table given below shows the number of persons participating in a survey from 6 different states.

    States Persons 
    S1100
    S2200 
    S3400 
    S4500 
    S5600 
    S6800

    What is the ratio of number of person participating in a survey from state S3 to the number of person participating in a survey from state S4?

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