Question : The following table shows the percentage of students passing out of four colleges (A, B, C and D) over four years. Study the table and answer the question that follows.
| Years | College A |
College B |
College C |
College D |
| 2019 | 68 | 78 | 56 | 78 |
| 2020 | 72 | 86 | 78 | 82 |
| 2021 | 78 | 91 | 82 | 85 |
| 2022 | 80 | 87 | 84 | 87 |
In which college is the average percentage of passing students over the given four years the least?
Option 1: College D
Option 2: College C
Option 3: College B
Option 4: College A
Correct Answer: College A
Solution :
Average percentage of student passing in college A over four years = $\frac{68+72+78+80}{4} = \frac{298}{4}$
Average percentage of student passing in college B over four years = $\frac{78+86+91+87}{4} = \frac{342}{4}$
Average percentage of student passing in college C over four years = $\frac{56+78+82+84}{4} = \frac{300}{4}$
Average percentage of student passing in college D over four years = $\frac{78+82+85+87}{4} = \frac{332}{4}$
The average percentage of passing students over the given four years is least in College A.
Hence, the correct answer is College A.
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