Question

Juations

John is n years old. Kim is three years younger than John and Vanessa is half
Kim's age

Answer 1

John = 9

Kim = 6

Vanessa = 3

Explanation:

John = n

Kim = n - 3

Vanessa = 0.5n - 1.5

Add them:

2.5n - 4.5 = 18

2.5n = 22.5

n = 9