Problema Solution
Anna is 12 years old, and her mother is three times as old as Anna. How many years ago was her mother four times as old as Anna?
Answer provided by our tutors
Anna is: 12 years old
Her mother is 3 times as old as Anna: 3*12 = 36 years
let 'x' represent the number of years ago when her mother was 4 times as old as Anna
36 - x = 4(12 - x)
by solving we find:
x = 4 years
click here to see the step by step solution of the equation:
4 years ago Anna's mother was 4 times as old as Anna.