SOLUTION: You have $85.00 in your bank account and start saving $15 per week. Your friend has $610 and is withdrawing $10 per week. Using substitution, determine the break even point and exp

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: You have $85.00 in your bank account and start saving $15 per week. Your friend has $610 and is withdrawing $10 per week. Using substitution, determine the break even point and exp      Log On


   

Question 974693: You have $85.00 in your bank account and start saving $15 per week. Your friend has $610 and is withdrawing $10 per week. Using substitution, determine the break even point and explain what the solution means. Thank you :)
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +A+ = the current amount in
the bank accounts
Let +w+ = number of weeks passed
(1) +A+=+85+%2B+15w+
(2) +A+=+610+-+10w+
------------------------
The break even point is where the two
accounts are equal
+85+%2B+15w+=+610+-+10w+
+25w+=+525+
+w+=+21+
In 21 weeks, their accounts are equal