SOLUTION: Hello tutor, I really need your help solving this question please. Bobby is three years older than twice Arianna’s age. If the total of their ages is 9, how old is Bobby, and

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: Hello tutor, I really need your help solving this question please. Bobby is three years older than twice Arianna’s age. If the total of their ages is 9, how old is Bobby, and       Log On


   



Question 970684: Hello tutor, I really need your help solving this question please.

Bobby is three years older than twice Arianna’s age. If the total of their ages is 9, how old is Bobby, and how old is Arianna?

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
B=3%2B2A
A%2BB=9
Substitute into eq. 2 from eq. 1,
A%2B%283%2B2A%29=9
3A=6
A=2
Then,
B=3%2B2%282%29
B=3%2B4
B=7