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Question

The following table presents the details about the number of students enrolled in three different academic programmes namely. B.A., B.C.A. and B.B.A. in five different colleges (A-E) during the year 2020. Based on the data in the table, answer the questions:

College-wise enrollment of students

College

Academic programme

B.A.

B.C.A. 

B.B.A.

A

275 

350 

425 

B

300 

325 

475 

C

325 

300 

325 

D

450 

375 

425 

E

325 

425 

225 

Number of students studying in B.A. in college B forms what percent of total number of students studying in all the programmes together in the same college? (rounded off to two digits after decimal)

The correct answer is 27.27%

The question asks for the percentage of students studying B.A. in college B compared to the total number of students studying in all programmes (B.A., B.C.A., and B.B.A.) in the same college (College B).

First, let's extract the required data for College B from the provided table:

College Academic programme B.A. B.C.A. B.B.A.
A 275 350 425
B   300 325 475
C   325 300 325
D   450 375 425
E   325 425 225

Based on the table data for College B:

  • Number of students studying B.A. in College B = 300
  • Number of students studying B.C.A. in College B = 325
  • Number of students studying B.B.A. in College B = 475

Next, we need to calculate the total number of students studying in all programmes together in College B.

Total students in College B = (Number of B.A. students) + (Number of B.C.A. students) + (Number of B.B.A. students)

Total students in College B = 300 + 325 + 475 = 1100

Now, we can calculate the percentage of students studying B.A. in College B relative to the total number of students in College B. The formula for percentage is:

$$ \text{Percentage} = \left( \frac{\text{Part}}{\text{Whole}} \right) \times 100\% $$

In this case:

  • Part = Number of students studying B.A. in College B = 300
  • Whole = Total number of students in College B = 1100

Let's calculate the percentage:

$$ \text{Percentage of B.A. students in College B} = \left( \frac{300}{1100} \right) \times 100\% $$

$$ \text{Percentage} = \left( \frac{300}{1100} \right) \times 100 \approx 0.272727... \times 100 $$

$$ \text{Percentage} \approx 27.2727... \% $$

The question asks for the answer to be rounded off to two digits after the decimal.

Rounded Percentage $\approx 27.27\%$

Therefore, the number of students studying in B.A. in college B forms approximately 27.27% of the total number of students studying in all the programmes together in the same college.

Revision Table - College B Student Data and Percentage Calculation

This table summarizes the data and the calculation for College B.

College Programme Number of Students Calculation Step
B B.A. 300 Numerator (Part)
B B.C.A. 325 For Total
B B.B.A. 475 For Total
B Total 300 + 325 + 475 = 1100 Denominator (Whole)
B Percentage (B.A. of Total) $\left( \frac{300}{1100} \right) \times 100\%$ Percentage Calculation
B Rounded Percentage 27.27% Final Result

Additional Information - Understanding Percentages in Data Analysis

Percentages are a fundamental tool in data analysis, especially when comparing a part to a whole. They express a fraction as a value out of 100.

  • The formula $\left( \frac{\text{Part}}{\text{Whole}} \right) \times 100\%$ is used to convert a fraction or ratio into a percentage.
  • In this problem, the 'part' is the number of B.A. students in College B, and the 'whole' is the total number of students in College B across all listed programmes.
  • Calculating percentages helps in understanding proportions and making comparisons, even when the total numbers are different. For example, we could compare the percentage of B.A. students in College B to the percentage of B.A. students in College A, even if the total enrollments in colleges A and B are different.
  • Rounding off percentages is often necessary to present data clearly, especially when dealing with non-terminating decimals. The required number of decimal places should always be specified.
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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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