SOLUTION: Brett is Robbbie's older brother. The sum of their ages is 39. The difference of the ages is 9. How old are Brett And Robbie?

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Question 1078301: Brett is Robbbie's older brother. The sum of their ages is 39. The difference of the ages is 9. How old are Brett And Robbie?
Answer by ikleyn(52898) About Me  (Show Source):
You can put this solution on YOUR website!
.
B + R = 39,
B - R =  9.


When you see couple of similar equations, add them immediately. You will get

2B = 48  ---  B = 48/2 = 24.  Brett is 24 years old.


Robbie is 39-24 = 15 years old.

Solved.