Comprehension
Number of Boys and Girls (in hundreds) in six different years in 5 different schools data is given below:
| School → | A | B | C | D | E | |||||
| Years ↓ | Boys | Girls | Boys | Girls | Boys | Girls | Boys | Girls | Boys | Girls |
| 2014 | 3.3 | 3.6 | 5.2 | 3.1 | 5.5 | 4.5 | 2.4 | 1.4 | 6.5 | 6.6 |
| 2015 | 6.6 | 4.2 | 4.9 | 2.2 | 6.9 | 3.3 | 4.4 | 2.3 | 5.5 | 3.6 |
| 2016 | 9.3 | 6.9 | 4.7 | 4.2 | 5.8 | 4.9 | 6.4 | 3.3 | 2.7 | 2.4 |
| 2017 | 5.4 | 9.6 | 6.3 | 5.4 | 6.6 | 5.2 | 5.3 | 5.4 | 5.4 | 5.7 |
| 2018 | 8.4 | 12.9 | 7.5 | 5.9 | 8.7 | 6.6 | 12.1 | 5.2 | 6.8 | 6.5 |
| 2019 | 12.3 | 14.4 | 9.8 | 4.4 | 11.7 | 4.2 | 12.2 | 9.4 | 10.8 | 12.7 |
Question: 1
What is the approximate percentage decrease in the number of boys in school D in the year 2017 as compared to the previous year?
What is the approximate percentage decrease in the number of boys in school D in the year 2017 as compared to the previous year?
Updated On: Dec 23, 2025
- 17%
- 12%
- 9%
- 5%
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The Correct Option is A
Solution and Explanation
To find the approximate percentage decrease in the number of boys in School D in 2017 compared to the previous year (2016), we need to follow these steps:
- Identify the number of boys in School D for the years 2016 and 2017 from the given data.
- The number of boys in School D in 2016 is \(6.4 \times 100 = 640\) and in 2017 it is \(5.3 \times 100 = 530\).
- Calculate the decrease in the number of boys from 2016 to 2017:
\(\text{Decrease} = 640 - 530 = 110\)
- Calculate the percentage decrease using the formula:
\(\text{Percentage Decrease} = \left(\frac{\text{Decrease}}{\text{Original Number}}\right) \times 100 = \left(\frac{110}{640}\right) \times 100\)
\(\approx 17.19\%\)
Thus, the approximate percentage decrease in the number of boys in School D in 2017 compared to 2016 is 17%, which makes the correct answer 17%.
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Question: 2
The number of girls in school B in the year 2018 is approximately what percent of the total number of students in school E in the year 2015?
The number of girls in school B in the year 2018 is approximately what percent of the total number of students in school E in the year 2015?
Updated On: Dec 23, 2025
- 46%
- 52%
- 58%
- 65%
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The Correct Option is D
Solution and Explanation
- First, identify the number of girls in School B for the year 2018. According to the given data, School B in 2018 has \(5.9 \text{ hundred girls }\), which is \(590\) girls.
- Next, find the total number of students in School E for the year 2015. According to the data:
- Boys in 2015: \(5.5 \text{ hundred } = 550\)
- Girls in 2015: \(3.6 \text{ hundred } = 360\)
- Total students in School E in 2015: \(550 + 360 = 910\)
- To find what percentage the number of girls in School B in 2018 is of the total number of students in School E in 2015, use the percentage formula:
- Formula: \(\left( \frac{\text{Number of Girls in School B (2018)}}{\text{Total Students in School E (2015)}} \right) \times 100\)
- Substitute the values: \(\left( \frac{590}{910} \right) \times 100\)
- Calculation:
- \(\frac{590}{910} \approx 0.64835\)
- \(0.64835 \times 100 \approx 64.835\)
- Therefore, the number of girls in School B in 2018 is approximately \(65\%\)of the total number of students in School E in 2015.
- Compare the calculated percentage with the given options:
- 46%
- 52%
- 58%
- 65%
- The correct answer is indeed 65% as calculated.
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Question: 3
What is the average number of girls in school A in all years taken together?
What is the average number of girls in school A in all years taken together?
Updated On: Dec 23, 2025
- 760
- 800
- 860
- 600
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The Correct Option is C
Solution and Explanation
The question is about finding the average number of girls in School A from the given data over multiple years. Let's solve this step-by-step:
Identify the number of girls in School A for each year from the table provided:
- 2014: 3.6 (in hundreds, hence, 360 girls)
- 2015: 4.2 (in hundreds, hence, 420 girls)
- 2016: 6.9 (in hundreds, hence, 690 girls)
- 2017: 9.6 (in hundreds, hence, 960 girls)
- 2018: 12.9 (in hundreds, hence, 1290 girls)
- 2019: 14.4 (in hundreds, hence, 1440 girls)
Calculate the total number of girls in School A over all the years:
\(360 + 420 + 690 + 960 + 1290 + 1440 = 5160\) girls
Determine the number of years considered:
There are 6 years (2014 to 2019).
Compute the average number of girls over these years:
\(\text{Average} = \frac{5160}{6} = 860\)
Thus, the average number of girls in School A over the considered years is 860.
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Top Questions on Tabulation
- Match List I with List II.
The following table embodies the details about the enrollment of students in five different activities namely Swimming, Singing, Drawing, Dancing and Handicraft in a School during the session 2020‐21. A total number of 3000 students including 1750 girls have been enrolled in various activities in the school. Based on the data in the table, match the following:
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