The table shows the percentage of boy students and the difference between the…
2023
The table shows the percentage of boy students and the difference between the number of boys and girls in six different schools (A-F) during four years (2019-2022).
School \ Year | 2019 Boys (%) | 2019 Diff (*) | 2020 Boys (%) | 2020 Diff (*) | 2021 Boys (%) | 2021 Diff (*) | 2022 Boys (%) | 2022 Diff (*) |
A | 70 | 136 | 60 | 70 | 75 | 184 | 60 | 86 |
B | 40 | 84 | 48 | 18 | 45 | 48 | 60 | 90 |
C | 44 | 60 | 55 | 24 | 60 | 52 | 56 | 24 |
D | 44 | 84 | 57 | 84 | 55 | 72 | 65 | 192 |
E | 75 | 280 | 60 | 136 | 70 | 264 | 66 | 224 |
F | 44 | 90 | 56 | 96 | 65 | 228 | 45 | 84 |
Note: Difference (*) means the difference between the number of boys and girls.
What is the total number of girls appearing for the exam from all six schools in the year 2020?
- A.
1364
- B.
1386
- C.
1404
- D.
1414
Show answer & explanation
Correct answer: A
To find the total number of girls in 2020, calculate the total students for each school using the percentage difference and absolute student difference.
School A: Boys 60%, Girls 40%. Gap is 20% = 70 students. Total = 350. Girls = 140.
School B: Boys 48%, Girls 52%. Gap is 4% = 18 students. Total = 450. Girls = 234.
School C: Boys 55%, Girls 45%. Gap is 10% = 24 students. Total = 240. Girls = 108.
School D: Boys 57%, Girls 43%. Gap is 14% = 84 students. Total = 600. Girls = 258.
School E: Boys 60%, Girls 40%. Gap is 20% = 136 students. Total = 680. Girls = 272.
School F: Boys 56%, Girls 44%. Gap is 12% = 96 students. Total = 800. Girls = 352.
Total Girls = 140 + 234 + 108 + 258 + 272 + 352 = 1364.