Question 471471
our mother is 3 times as old as my brother and i am 1/3rd times older than my brother. if 4 years ago i was as old as my brother today, what is the age of my mother?

Let brothers age now be x
mother's age = 3x
my age = x/3+x
...
4 years ago
brother's age = x-4
mother's age= 3x-4
my age x/3+x-4
my age =x

x=x/3 +x -4
x/3=4
x=12
Mother's age = 12*3=36 years.