1. When Michonne is twice as old as Sasha was when Michonne was half Sasha's present age, Sasha will be half again as old as Michonne will be when Sasha is half again as old as Michonne is now. One of them is in her fifties, and we have taken ages in complete years. You work it out!

Sasha 58 years old, Michonne 46

Sasha 56 years old, Michonne 48

Sasha 54 years old, Michonne 44