Question

एक विद्यालय में तीन 3/5 बच्चे लड़के हैं तथा लड़कियों की संख्या 800 है लड़कों की संख्या ज्ञात कीजिए​

Answer 1

SOLUTION

GIVEN

In a school 3/5 of all students are boys and the number of girls is 800

TO DETERMINE

The total number of boys

EVALUATION

Let total number of students = N

Now it is given that 3/5 of all students are boys

So number of boys students

$\displaystyle\sf{ = N \times \frac{3}{5} }$

$\displaystyle\sf{ = \frac{3N}{5} }$

Number of girls

$\displaystyle\sf{ = N - \frac{3N}{5} }$

$\displaystyle\sf{ = \frac{5N - 3N}{5} }$

$\displaystyle\sf{ = \frac{2N}{5} }$

So by the given condition

$\displaystyle\sf{ \frac{2N}{5} = 800 }$

$\displaystyle\sf{ \implies \: N = 800 \times \frac{5}{2} }$

$\displaystyle\sf{ \implies \: N = 400 \times 5 }$

$\displaystyle\sf{ \implies \: N = 2000}$

So total number of students = 2000

Hence total number of Boys

= 2000 - 800

= 1200

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Answer 2

ek Vidyalay mein teen bete 5 bacche ladke Hain tatha ladkiyon ki sankhya 800 hai ladkon ki sankhya gyat kijiye