Question 30155
Let the age before the current age be x
TIna's age = x-12
Her mom's age = x-40
Equation:
<pre>
5(x-12)=x-40
5x-60=x-40
4x=20
x=5


<font color = purple>Hence, it was 5 years ago sine her mom was 5 times as old as her.</font>
PAul.