A group of $80$ students went on a picnic. $15 %$ of them were girls.How many girls were there in the group?How many were boys?

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Solution

Total number of students $= 80$

Percentage of girls $= 15 %$

Number of girls $= 15 %$ of $80$

$= \frac{15}{100} \times 80$
$= \frac{15}{10} \times 8$
$= \frac{15}{5} \times 4$

$= 3 \times 4 = 12$

Number of boys $= 80 - 12 = 68$

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A group of 80 students went on a picnic.15% of them were girls.How many girls were there in the group?How many were boys?

Total number of students=80Percentage of girls=15%Number of girls=15% of 80=15100×80=1510×8=155×4=3×4=12Number of boys=80−12=68

A group of $80$ students went on a picnic. $15 %$ of them were girls.How many girls were there in the group?How many were boys?

Total number of students $= 80$

Percentage of girls $= 15 %$

Number of girls $= 15 %$ of $80$

$= \frac{15}{100} \times 80$
$= \frac{15}{10} \times 8$
$= \frac{15}{5} \times 4$

$= 3 \times 4 = 12$

Number of boys $= 80 - 12 = 68$