BRAINLIEST AWAITS!
Solve this question and you may get 15 points and brainliest!

Answer:
Step-by-step explanation:
a) Age of Jeff = j
Tina's age = j - 4
b) j = 15 years
Tina's age = 15 - 4 = 11 years
j = 20 years
Tina's age = 20 - 4 = 16 years
j = 58 years
Tina's age = 58 - 4 = 54 years