Question

out of 135 students of a school the ratio of the number of the boys to that of number of girls is 4 is to 5 if 15 more boys get admitted what will be the new ratio

Answer 1

Total no. of students = 135

Ratio of boys to girls = 4:5

Therefore no. of boys be 4x & no. of girls be 5x

We know 4x+5x = 135

9x = 135

x = 135/9 = 15

Therefore no. of boys is 60 & no. of girls is 75

If 15 more boys are admitted,

No. of boys = 75

Therefore new ratio = 75/75

= 1:1

Answer 2

Answer:

Ratio is 1:1

Step-by-step explanation:

Total number of students = 135

Ratio=4:5

Let, number of boys and number of girls be x

so 4 x + 5 x = 135

or, 9x =135

or, x = 15

Therefore, Boys =(15×4)=60

Girls =(15×5)=75

As, 15 boys got admitted .

So, 60 + 15 = 75

New ratio =60+15:75

=75:75. =1:1

Ans -1:1