Question

there are 120 girls and 57 boys in a school. if 5 percent of the girls leave and no new pupils are admitted what percentage of the whole School will be boys

Answer 1

Girls = 120

Boys = 57

Girls left = 5% of 120 = 5/100 x 120 = 600/100 = 6

Girls remaining = 120 - 6 = 114

Total students now left = 114 + 57 = 171

% of boys of total students = 57/171 * 100 = 5700/171 = 33 1/3 = 33.33%

Boys is 33.33% of total students.

Answer 2

Number of girls =120

Number of boys = 57

Number of girls left = 5% of 120

=5/100*120

= 6 girls

Number of girls = 120-6 = 114

Total number of students = 57 + 114 = 171

% of boys = 57/171*100

= 33.33

33.33% of boys are there in the school.

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