SOLUTION: Sarah is 8 more than 2 times as old as Brad. In five years the sum of the ages will be 69. How old is Brad?

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: Sarah is 8 more than 2 times as old as Brad. In five years the sum of the ages will be 69. How old is Brad?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 774: Sarah is 8 more than 2 times as old as Brad. In five years the sum of the ages will be 69. How old is Brad?
Answer by arden42(16) About Me  (Show Source):
You can put this solution on YOUR website!
First, we need to write out what we know as equations:
s+=+8%2B2b
%28s%2B5%29+%2B+%28b%2B5%29+=+69
Substituting the first equation into the second gives:
%288%2B2b%2B5%29+%2B+%28b%2B5%29=69
18%2B3b=69
3b=51
b=17
Brad is 17 years old.