1100 boys and 700 girl

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

Options:

A . 58%

B . `62 2/3`%

C . 64%

D . 78%

Answer: Option B

Total number of students = 1100 + 700 = 1800

Number of students passed = (42% of 1100 + 30% of 700) = (462 + 210)= 672

Number of failures = 1800 - 672 = 1128.

`:.` percentage failure = `(1128/1800 xx 100)`% = `62 2/3`%.

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