Solution
: Let the present age of Anima $=x$ years
Then, present age of Rekha $=(x+3)$ years
6 years ago Anima's age $=(x-6)$ years
6 years ago Rekha's age $=(x+3-6)$ years
According to question, $x+3-6=4(x-6)$
or, $x-3=4 x-24$
or, $\quad x-4 x=-24+3$
or, $\quad-3 x=-21$
or,
$x=\frac{-21}{-3}=7$
Present age of Anima $=7$ years
Present age of Rekha $=(7+3)$ years $=10$ years.