Question
1100 boys and 700 girls are examined in a test; 42% of
the boys and 30% of the girls pass. The percentage of the total who failed is :Solution
Total number of students = 1100 + 700 = 1800
Number of students passed = (42% of 1100 + 30% of 700) - (462 + 210) = 672.
Number of failues = 1800-672 = 1128.
Percentage failure = (1128/1800) × 100 = 62(2/3)%.
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