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Question 804906: Currently, you have $80 and your sister has $145. You decide to save $6 of your allowance each week, while your sister decides to spend her whole allowance plus $7 each week. How long will it be before you have as much money as your sister. This is what I have so far: 80 + 6x =
but I don't understand how to express the other side in an equation. Please help me.
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! Currently, you have $80 and your sister has $145.
You decide to save $6 of your allowance each week, while your sister decides to spend her whole allowance plus $7 each week.
How long will it be before you have as much money as your sister.
This is what I have so far:
The sister is subtracting 7$ each week, from her savings of $145
80 + 6x = 145 - 7x
6x + 7x = 145 - 80
13x = 65
x = 65/13
x = 5 weeks
:
:
confirm this by finding how much each will have
80 + 6(5) = 110
145 - 7(5) = 110
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