Question

In a class there is 4/11 are girls and 490 are boys.Then what is the number of girls?

Answer 1

Answer:

280

Step-by-step explanation:

since 4/11 is the ratio of girls to total students, therefore the ratio of boys to total students must be 1-4/11= 7/11

now,

the number of boys is 490 so the equation turns out to be 490*11/7= total no of students, which comes out to be 770.

now the ratio of girls is 4/11 of 770

I.e 4*770/11

which is 280.