Question

Bob is three years older than twice Karen's age. If Karen is eighteen, how old is Bob?

Answer 1

Bob would be 39 years old.

Explanation:

1. Let's make b a variable for Bob and k as the variable for Karen.
   (Variables are letters in Algebra)

2. You are given that: 2k+3=B and that K=18

3. Plug 18 into the K. 2(18)+3=

4. If 2 x 18 is 36 and you add 3, then Bob is 39.

Hoped this helped! :)