Question

set up an eequation for Tina's father is 49 years old .He is 4 years older than 3 times Tina's age (x)

Answer 1

Tina's age be x.
so,
3x+4 = 49 is the equation required

Answer 2

Let the age of Tina be x

so by the confition given In the question

the required equation is

3x+4=49

if solved further you will get Tinas age is 15years