Question

the ratio of ria's age to her brother's age is 4:9.ria is 10years younger than her brother.how old is ria. now?

Answer 1

Ratio of Ria : Brother = 4 : 9

Define x:

Let x be the constant ratio:

Ria : Brother = 4x : 9x

Solve x:

Difference in their age in term on x = 9x - 4x = 5x

Difference in their age = 10 years

5x = 10

x = 2

Find Ria's age:

Ria = 4x = 4(2) = 8 years old

Answer: Ria is 8 years old

Answer 2

Let age of ria and her brother be 4x and 9x.


Given that : Ria is 10 years younger than her brother.


Therefore,


9x-10 = 4x



5x = 10

x = 2 years.


Present age of ria = 4x = 8 years.