Question

5. 55% of the students in a school are girls. If the number of boys is 1,800, find the total strength of the girls.

Answer is 2200
So ,give me full explaination.
And don't give irrlevant answer.​

Answer 1

Answer:

55% of students in a school are boys that means there are= 100 - 55 = 45% girls

Let total number of students be x

45/100 of x = 675

45x/100 = 675

Cross multiplication

45x = 675 × 100

x = 675 × 100/45

x = 67500/45

x = 1500

Thus, total number of students in school are = 1500

Total number of boys = 55/100 × 1500

Total number of boys = 55 × 15 = 825

Number of boys in the school are 825

Number of girls in the school are = 1500 - 825 = 675 (already given)

Answer: Number of boys in the school are 825

Answer 2

Step-by-step explanation:

If 55% of total strength of students are girls, then the total strength of boys is 45% of total strength.

let total strength of students be x

$45\% \: of \: x = 1800 \\ \frac{45}{100}x = 1800 \\ \frac{9}{20} x = 1800 \\ \frac{x}{20} = 200 \\ x = 4000$

hence,

total strength of girls = 55% of total strength of students = 55% of 4000 = 2200

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