Respuesta :

mathstudent55

Answer:

Equations:

k + m = 48

m = 3k

Answer: Mark is 12; mom is 36

Step-by-step explanation:

Let k = Mark's age

Let m = mom's age

k + m = 48

m = 3k

k + 3k = 48

4k = 48

k = 12

m = 3k = 3(12) = 36

Equations:

k + m = 48

m = 3k

Answer: Mark is 12; mom is 36