Question

if 40% of students in a school are boys and the nber of girls in the school is 420 find the no. of boys in the school​

Answer 1

Answer is 280 boys are in the school

Answer 2

${\huge{\underline{\color{red}{\bf{Question}}}}}$

if 40% of students in a school are boys and the nber of girls in the school is 420 find the no. of boys in the school?

${\huge{\underline{\color{green}{\sf{Answer}}}}}$

280

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${\large{\underline{\underline{\rm{Given:}}}}}$

$\tt{number\:of\:girls=420}$

$\tt{number\: of\: boys=40\: percent}$

${\large{\underline{\underline{\sf{To\:Find}}}}}$

$\tt{number\:of\:boys=?}$

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${\qquad{\qquad{\qquad{\large{\underline{\underline{\sf{Solution}}}}}}}}$

${\qquad{\qquad{\qquad{\rm{1percent\:of\:420=\frac{420}{60}=7\:percent}}}}}$

${\qquad{\qquad{\qquad{\rm{So, 40\:percent=7\times40=280\: percent}}}}}$

${\qquad{\qquad{\qquad{\rm{No.of Boys=\underline{280}}}}}}$

${\qquad{\qquad{\qquad{\rm{Total\:number\:of Students=420+280=700}}}}}$

${\large{\underline{\underline{\rm{Answer=280}}}}}$

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