SOLUTION: okay i'm not positive this is finance but i'm pretty sure! : Karyn has saved $310.00, but needs to withdraw $20.00 pew week to help meet her expenses. Glenn has $100.00 saved and

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Question 341010: okay i'm not positive this is finance but i'm pretty sure! :
Karyn has saved $310.00, but needs to withdraw $20.00 pew week to help meet her expenses. Glenn has $100.00 saved and adds $10.00 a week.
a.) Write an expression that represents the amout of money Glenn with have in X weeks.
b.)Write an expression that represents the amount of money that Karyn will have in X weeks.
c.)How many weeks will it take until Glenn and Karyn have the same amount of money?
please show how you did it or just explain, that would be greaat!
Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website!
Karyn has saved $310.00, but needs to withdraw $20.00 per week to help meet her expenses.
Glenn has $100.00 saved and adds $10.00 a week.
;
a.) Write an expression that represents the amount of money Glenn with have in X weeks.
G's amt = 10x + 100
:
b.)Write an expression that represents the amount of money that Karyn will have in X weeks.
K's amt = 310 - 20x
:
c.)How many weeks will it take until Glenn and Karyn have the same amount of money?
Just make the two expressions equal to each other, and solve for x
10x + 100 = 310 - 20x
10x + 20x = 310 - 100
30x = 210
x =
x = 7 weeks, they will have an equal amt in the bank
:
:
You can prove this, replace x with 7 and find the amount each has
G: 10(7) + 100 = 170
K: 310 - 20(7) = 170 also