Study the following table and answer question.
Number of students appeared in an examination from five cities:
| Cities | No. of Students (in thousands) | Ratio of students passed and failed |
| A | 54 | 5:04 |
| B | 126 | 4:03 |
| C | 84 | 10:11 |
| D | 96 | 9:07 |
| E | 132 | 6:05 |
The total number of students who appeared in the examination from cities C and D is what percent more than the total number of students who failed in cities A, B and E? (nearest to an integer)
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 30%
The total number of students who appeared in the examination from cities C = 84 + 96 = 180
The total number of students who failed in cities A, B and E = (4/9) × 54 = 24, (3/7) × 126 = 54, (5/11) × 132 = 60 i.e 24 + 54 + 60 = 138
% Increase = (42/180) × 100 = (42/138) × 100 = 30%