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Question

The following table shows the number of students (Boys and Girls) and the percentage of girls who passed in a 10+2 examination from six different schools (A-F) in the year 2023 and 2024. Based on the data in the table, answer the questions that follow.
School-wise Details of Students Passing in a 10+2 examination
 

SchoolYear
Year 2023Year 2024
Number of Passed StudentsPercentage of Passed GirlsNumber of Passed StudentsPercentage of Passed Girls
A50046%55044%
B60042%64040%
C65056%56045%
D72060%80048%
E60054%84055%
F65050%75036%

The average number of girls who passed in the year 2024 from all the six schools is ________% of the number of students who passed from School A in the year 2023.

The correct answer is
62.2

Analyzing 10+2 Exam Data: Girls Passing Percentage

This problem requires us to compare the performance of students across different schools based on the provided data table. We need to find the average number of girls who passed the 10+2 examination in the year 2024 across all six schools (A-F). Then, we must express this average as a percentage of the total number of students who passed from School A in the year 2023.

Step 1: Calculate the Number of Girls Passed in 2024 for Each School

First, let's calculate the number of girls who passed from each school in 2024 using the total passed students and the percentage of girls passed.

  • School A (2024): Total Passed = 550, Percentage of Girls Passed = 44%
    Number of Girls = $550 \times \frac{44}{100} = 550 \times 0.44 = 242$
  • School B (2024): Total Passed = 640, Percentage of Girls Passed = 40%
    Number of Girls = $640 \times \frac{40}{100} = 640 \times 0.40 = 256$
  • School C (2024): Total Passed = 560, Percentage of Girls Passed = 45%
    Number of Girls = $560 \times \frac{45}{100} = 560 \times 0.45 = 252$
  • School D (2024): Total Passed = 800, Percentage of Girls Passed = 48%
    Number of Girls = $800 \times \frac{48}{100} = 800 \times 0.48 = 384$
  • School E (2024): Total Passed = 840, Percentage of Girls Passed = 55%
    Number of Girls = $840 \times \frac{55}{100} = 840 \times 0.55 = 462$
  • School F (2024): Total Passed = 750, Percentage of Girls Passed = 36%
    Number of Girls = $750 \times \frac{36}{100} = 750 \times 0.36 = 270$

Step 2: Calculate the Total Number of Girls Passed in 2024

Sum the number of girls passed from all six schools in 2024:

Total Girls Passed (2024) = $242 + 256 + 252 + 384 + 462 + 270 = 1866$

Step 3: Calculate the Average Number of Girls Passed in 2024

Find the average by dividing the total number of girls passed by the number of schools (which is 6):

Average Girls Passed (2024) = $\frac{\text{Total Girls Passed (2024)}}{\text{Number of Schools}}$

Average Girls Passed (2024) = $\frac{1866}{6} = 311$

Step 4: Identify the Number of Students Passed from School A in 2023

From the table, the number of students who passed from School A in the year 2023 is 500.

Step 5: Calculate the Required Percentage

Now, we need to find what percentage the average number of girls passed in 2024 (311) is of the number of students passed from School A in 2023 (500):

Percentage = $\left( \frac{\text{Average Girls Passed (2024)}}{\text{School A Passed Students (2023)}} \right) \times 100$

Percentage = $\left( \frac{311}{500} \right) \times 100$

Percentage = $\frac{311}{5}$

Percentage = $62.2\%$

Therefore, the average number of girls who passed in the year 2024 from all the six schools is 62.2% of the number of students who passed from School A in the year 2023.

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Important Questions from Average

  1. Average of 40 numbers is 71, if the number 100 replaced by 140, then average is increased by

  2. The captain of a football team of 11 members is 28 years old and the goalkeeper is 4 years older than him. If the ages of these two are removed, then the average age of the remaining players is two years less than the average age of the whole team. What is the average age of the team?

  3. There are two Classes A and B having 25 and 30 students respectively. In Class-A the highest score is 21 and lowest score is 17. In Class-B the highest score is 30 and lowest score is 22. Four students are shifted from Class-A to Class-B.

    Consider the following statements:

    1. The average score of Class-B will definitely decrease.

    2. The average score of Class-A will definitely increase.

    Which of the above statements is/are correct?

  4. The average weight of A, B, Cis 40 kg, the average weight of B, D, Eis 42 kg and the weight of Fis equal to that of B. What is the average weight of A, B, C, D, Eand F?

  5. A cow costs more than 4 goats but less than 5 goats. If a goat costs between Rs. 600 and Rs. 800, which of the following is a most valid conclusion?

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