Question

-30
=> 22= 4.6
2) The ratio of boys to girls in a class is
3:4. If the total number of students is
70, find the number of boys and girls.​

Answer 1

Answer:

30and40

Step-by-step explanation:

ratio is 3:4

let boys=3x and girls=4x

so,3x+4x=70

7x=70

x=10

so boys=3x=>3(10)=30

girls=4x=>4(10)=40

Answer 2

Answer:

Boys = 30 ,girls = 40

Step-by-step explanation:

Let common factor be x

No of boys = 3x

No of girls = 4x

Sum of ratios = 7x

No of boys = 3x/7x ×70 = 30

No of girls = 4x / 7x × 70 = 40