Math, asked by nencyghori, 8 months ago

a class has girls and boys in the ratio 4:6.among the girl the ratio of maths to physics student is 3:1. if the ratio of the maths to physics student in the Entire class is 3:2 what percent of the class comprise girls studying math​

Answers

Answered by jitendrakumarsha2432
1

Answer:

Let us assume that the total number of student in the class is 90.

According to the given condition, Girl:Boy=4:5

4x+5x=90

9x=90

x=10

So the number of girls is 40 and the number of boys is 50.

Now, according to the second condition ratio of mathematics to physics is 3:1 for girls.

So, 3x+x=40

4x=40

x=10

So, the number of girls studying physics is 10 and mathematics is 30.

So, the number of girls studying physics to the total number of girls is 10/40

So, percentage =(10/40)*100 =25%

Similar questions