Answer:
Kevin is 7, Uncle Rob is 54
Step-by-step explanation:
Let's express the information given by the question statement.
1. Tonya (T) is twice Kevin's (K) age: T = 2K
2. In three years, Tonya (T) will be 17: T + 3 = 17
3. In another three years, Uncle Rob (R) will be 3x Tonya's (T) age: R = 3(T+3+3)
From 2, we can say that Tonya is now 14.
First equation becomes: 17 = 2K ... which means K = 7, Kevin is 7.
Third equation becomes: R = 3 (14 + 3 + 3) = 3 (20) = 60
In six years, Rob will be 60. So, now, he's 54 (60-6).
