SOLUTION: mariana has $50 in her savings account and saves $3.00 each week. luis starts with no money in his savings account and saves $5.50 each week. after how many weeks will luis have mo

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: mariana has $50 in her savings account and saves $3.00 each week. luis starts with no money in his savings account and saves $5.50 each week. after how many weeks will luis have mo      Log On


   



Question 288423: mariana has $50 in her savings account and saves $3.00 each week. luis starts with no money in his savings account and saves $5.50 each week. after how many weeks will luis have more money saved than mariana
Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
Mariana's savings can be represented by MarianaSaving+=+50+%2B+3w
Luis's savings can be represetned by LuisSavings+=+5.5w
You are asked to find when Luis has more saved that Mariana
LuisSavings+%3E+MarianaSavings
5.5w+%3E+50+%2B+3w
2.5w+%3E+50
w+%3E+50%2F2.5
w+%3E+20
So at 20 weeks they have the same amount. After 20 weeks, Luis has more.
Note this assumes neither get any interest on their accounts.