Tamia’s mother is 3 times older than Tamia. The sum of their age is 52. How old is Tamia and her mom?

Let’s say that Tamia is x years old. Tamia’s mother is 3x years old. The sum of their ages is 52 years old.
That means

x + 3x = 52
4x = 52
x = 13
Tamia is 13 years old and her mom is 3 times older; 39 years old.

5\16 x 2\5 = 10/80simplify to 1/80

It’s c. i’m almost sure