Question 771529
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of 300 children in school 60% are girls and 40% are boys.if 12 girls leave and no new pupils are admitted what percentage of the total will be boys and girls.
Ans:
60% are girls. Therefore number of girls = 300*60% = 300*60/100 = 180
And number of boys = 300 - 180 = 120.
If 12 girls leave,
Number of girls = 180 - 12 = 168.
Number of boys = 120 (unchanged)
Total number of students = 288
%age of girls = (168/288)*100 = {{{red(58.33)}}}%
%age of boys = (120/288)* 100 = {{{red(41.67)}}}% 
(or it can be also computed as 100 - 58.33 = 41.67%)
Hope you got it :)
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