Question

Out of 50 students in a class, 30 are boys. Find the ratio of 1)no.of boys to the no. of girls 2)no.of girls to the total number of students 3)no.of boys to the total number of students

Answer 1

Answer:

Given,

Total no.of students=50

No. of boys=30

No. of girls=Total no. of students-No. of boys

=50-30=20

Hence,

1. Ratio of no. of boys to no.of girls=30:20=30/20=3/2=3:2
2. Ratio of no.of girls to the total no. of students=20:50=20/50=2/5=2:5
3. Ratio of no. of boys to total no. of students=30:50=30/50=3/5=3:5

Answer 2

Answer:1) 3:2

2) 2:5

3) 3:5

Step-by-step explanation:

Students in class =50

Boys in class =30

Girls in class =?

Therefore,

Let girls be x ,

No.of boys + No.of girls =total no. Of students in class

= x +30 =50

Therefore, x=50 -30

=20

Therefore no. Of girls are 20

1)no.of boys : no of girls

= 30:20

=3:2..........................(1)

2)no.of girls : no.of students

=20:50

=2:5........................…(2)

3)no.of boys : no. Of students

= 30 :50

=3:5...............….......(3)