Question

In a co education school there are 15 more girls than boys.if the number of girls is increased by 10% and the number of boys is also increased by 16%

Answer 1

Step-by-step explanation:

Let the number of boys = x, then the number of girls = (x+15)

New number of girls =(x+15)×1.1

New number of boys =x×1.16

According to question,

1.1(x+15) = 1.16x + 9

=> 1.16x - 1.1x = 16.5 - 9 = 7.5

=> 0.06x = 7.5

=> 7.50.06=125

∴ Number of boys = 125

Number of girls = 140

Number of students = 265 \)

Answer 2

Step-by-step explanation:

Letthenumberofgirlsbex,

numberofboys=x−15,

Given,

1.1x−1.16(x−15)=9,

0.06x=8.4,

x=140,

Totalnumberofstudent=140+125=265