Question 1167787
p for Pinky and m for Mother;
take the descriptions could render for you {{{system(5p-m=20,-7p+3=20)}}}.


3*E1, and the add the members
{{{system(15p-3m=60,-7p+3m=20)}}}


{{{8p=80}}}


{{{highlight(p=10)}}}, Pinky's age now.
{{{highlight(m=30)}}}, Mother now.