Percentage distribution of students qualifying an entrance exam from seven schools A–G, 2020 and 2021. School G: 90 (2020), 135 (2021).
| School | 2020 (%) | 2021 (%) |
|---|---|---|
| A | 21 | 23 |
| B | 14 | 8 |
| C | 16 | 11 |
| D | 10 | 14 |
| E | 18 | 16 |
| F | 9 | 13 |
| G | 12 | 15 |
The number of students qualifying from Schools E and G together in 2020 is what percent of the number of students qualifying from School B in 2021?
A188.5
B247.5
C342.5
D312.5 ✓ Correct
Correct answer: (D) 312.5
Explanation
The answer is 312.5 percent.
Since School G was 12 percent and equalled 90 in 2020, the 2020 total is 750.
Schools E and G together are 30 percent of 750, which is 225.
The 2021 total is 900, so School B in 2021 is 8 percent of 900, which is 72.
So the share is 225 divided by 72, times 100.
That is 312.5 percent.
So the answer is 312.5 percent.
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