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In two successive years 100 and 75 students of a school appeared at the final examination. Respectively, 75% and 60% of them passed. The average rate of pass is
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68 4 % 7 - 78%
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80 1 % 2 - 80%
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Correct Option: A
Number of students passed in first year = 75
Number of students passed in second year
| = | = 45 | 100 |
Total number of passed students = 75+45=120
Total number of appeared students =175
∴ Required percentage
| = | × 100 = 68 | % | 175 | 7 |
