Step-by-step explanation:

Let's start by defining some variables:

Martin's current age: m

Martin's mother's current age: 2m

Martin's age 12 years ago: m - 12

Martin's mother's age 12 years ago: 2m - 12

From the problem statement, we know that Martin's mother's age 12 years ago was 5 times Martin's age 12 years ago. We can write this as an equation:

2m - 12 = 5(m - 12)

Simplifying and solving for m:

2m - 12 = 5m - 60

3m = 48

m = 16

Therefore, Martin's current age is 16.

To show Martin's age in relation to his mother's age 12 years ago, we can substitute m = 16 into the expression for Martin's age 12 years ago:

m - 12 = 16 - 12 = 4

So Martin's age 12 years ago was 4. To find his mother's age 12 years ago, we can substitute m = 16 into the expression for her age 12 years ago:

2m - 12 = 2(16) - 12 = 20

Therefore, Martin's mother's age 12 years ago was 20. We can write this as the equation:

Martin's age 12 years ago = 4

Martin's mother's age 12 years ago = 20