A) 20
B) 25
C) 30
D) None of these
Correct Answer: C
Solution :
Let number of boys and girls participating in sports be 3x and 2x respectively. Then, \[3x=15\] or \[x=5\] So, number of girls participating in sports \[=2x=10\] Number of students not participating in sports \[=60-(15-10)=35\] Let number of boys not participating in sports be y. Then, number of girls not participating in sports \[=(35-y)\] Therefore, \[(35-y)=y+5\] \[\Leftrightarrow \] 2y \[\Leftrightarrow \] 30 \[\Leftrightarrow \] \[y=15.\] So, number of girls not participating in sports \[=(35-15)=20\] Hence, total number of girls in the class \[=(10+20)=30.\]You need to login to perform this action.
You will be redirected in
3 sec