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Question

70% of the students in a school are boys and the number of girls is 504 find the number of boys in the school.

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Solution

% of boys + % of girls = 100

70 + % of girls = 100

% of girls = 30
and,
number of girls =%ofgirls100× total students

504=30100× total students

total students =1680

number of boys = total students no. of girls
=1680540
=1176

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