Problema Solution
There are 120 girls and 57 boys in a school.if 5% of the girls leave and no new pupils are admitted,what percentage of the whole school will be boys?
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Solution: # of girls who left = 120*0.05 = 6
# of girls stayed = 120 - 6 = 114
Total students = 114 + 57 = 171
% of boys = 57 / 171 x 100%
% of boys = 33.33%