Respuesta :

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

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