Question

In a coed school 45%of the total student are girls if there are 440boys in the school find the no of girls

Answer 1

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Answer 2

GIVEN:

• 45%of the total student are girls
• No. of boys = 440

TO FIND:

• find the no. of girls in a school ?

SOLUTION:

Let the total number of students in school be 'x'

➠ No. of girls = $\rm{\dfrac{45}{100} \times x}$

➠ No. of boys = $\rm{ x - \Big( \dfrac{45}{100} \times x \Big)}$

We have given that the total number of students in a school = 440

According to question:-

$\rm{\rightharpoonup x - \dfrac{45x}{100} = 440 }$

$\rm{\rightharpoonup \dfrac{100x - 45x}{100} = 440 }$

$\rm{\rightharpoonup \dfrac{55x}{100} = 440 }$

$\rm{\rightharpoonup 55x = 440 \times 100}$

$\rm{\rightharpoonup 55x = 44000}$

$\rm{\rightharpoonup x = \cancel\dfrac{44000}{55}}$

$\bf{\rightharpoonup x = 800}$

No. of girls = $\rm{\dfrac{ 45}{\cancel{100}} \times \cancel{800}}$

$\bf{ No. \: of \: girls = 360}$

❝ Hence, the no. of girls = 360 ❞

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