Question

In a school there are 75% are boys. 80% of boys and 20% of girls are scholarship holders.
The total 63 students are not scholarship holders. Calculate the total number of students

plz give explainwd answer​

Answer 1

Answer:

Answer = 78%

Step-by-step explanation:

Let number of boys be 300.

Number of girls = 200

Boys holding scholarship =

$\frac{20}{100} \times 300 = 60$

Girls holding scholarship =

$\frac{25}{100} \times 200 = 50$

Total students holding scholarship = 60 + 50 = 110

Therefore. Percentage of students not holding scholarship

$\frac{50 - 100}{500} \times 100\%$

$\frac{390}{500} \times 100\% = 78\%$

= 78%

Answer 2

Step-by-step explanation:

in a school 75% boys

then girl (100-75) =25%

let total number of students x

then number of boys = X×75/100 = 3X/4

and girl (X -3X/4)= X/4

80% boys scholarship holder

then (100-80)= 20% is not scholarship holder

number of boys are not scholarship = 3X/4 × 20/100 = 3X/20

number of boys is not scholarship = x

20% girl scholarship holder

number of girl' is not scholarship holder = x/4 × (100-20)%

= x/4 × 80/100 = x/5

63 students are not scholarship holder

so 3X/20+ X/5= 63

or, (3X+4X)/20= 63

or, 7X/20 = 63

or, X= 63× 20/7 = 180

so total number of students 180

I hope it help you