Question
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The following table shows the percentage (%) distribution of number of students qualifying an Entrance Exam from seven schools A-G in the years 2020 and 2021. The number of students qualifying from School G in 2020 and 2021 are 90 and 135, respectively. Based on the data in the table, answer the questions:
School-wise Distribution of Qualified Students
| School | Distribution (%) of Qualified students | |
| 2020 | 2021 | |
| A | 21% | 23% |
| B | 14% | 8% |
| C | 16% | 11% |
| D | 10% | 14% |
| E | 18% | 16% |
| F | 9% | 13% |
| G | 12% | 15% |
The percentage of the number of students qualifying from Schools A-G together in 2021 with reference to 2020 is
Answer (Detailed Solution Below)
Detailed Solution
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Let the total number of students qualified in 2020 be 100x.
⇒ 12x = 90
⇒ x = 7.5
The number of students qualifying in 2020 = 100x = 750.
Let the total number of students qualified in 2021 be 100y.
⇒ 15y = 135
⇒ y = 9
The number of students qualifying in 2021 = 100y = 900.
The percentage of the number of students qualifying from Schools A-G together in 2021 with reference to 2020 is:
⇒ 900/750 × 100
⇒ 120%
Last updated on Jun 12, 2025
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