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N2 was solved in my previous post under this link
https://www.algebra.com/algebra/homework/Subset/Subset.faq.question.1197000.html
N3 is solved below.
From the condition, we have two equations
V + R = 57 (1) ("the sum of their ages is 57")
V = 4*R + 2 (2) ("When Vince’s age is divided by Raven’s age")
From equation (1), express R = 57 - V and substitute it into equation (1). You will get
V = 4*(57-V) + 2.
Simplify and find V
V = 4*57 - 4V + 2
V + 4V = 4*57 + 2
5V = 230
V = 230/5 = 46.
ANSWER. Vince is 46 years old. Raven is 57-46 = 11 years old.
Solved.
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