# There are 4/9 of boys are in the school and 775 of girls . Find the number of boys

$Letthetotalno.ofstudentsintheschoolbex,\phantom{\rule{0ex}{0ex}}andtheno.ofboyswillbe\frac{4x}{9}\phantom{\rule{0ex}{0ex}}andthegivenno.ofgirlsare=775\phantom{\rule{0ex}{0ex}}Accordingtothequestion;\phantom{\rule{0ex}{0ex}}x-\frac{4x}{9}=775\phantom{\rule{0ex}{0ex}}\frac{9x-4x}{9}=775\phantom{\rule{0ex}{0ex}}\frac{5x}{9}=775\phantom{\rule{0ex}{0ex}}x=\frac{775\times 9}{5}=155\times 9=1395\phantom{\rule{0ex}{0ex}}Sotheno.ofboyswillbe:1395-775=620$

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