Question

if the sister is 3 times older than her brother 5 years old she was 5 times as old as her brother what is the present age of the Sisters

Answer 1

Let the present age of brother be a

Present age of sister = 3a

According to question

5 years ago

Sister's age = 5 × Brother's age

=> 3a - 5 = 5 ( a - 5)

=> 3a - 5 = 5a - 25

=> 3a - 5a = - 25 + 5

=> - 2a = - 20

=> a = 10

Brother's present age = 10 years

Sister's present age = 30 years