SOLUTION: how do you wright an equation for this problem? currently, you have $60 and your sister has $135. you decide to save $5 of your allowance each week, while your sister decided to

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Question 111323: how do you wright an equation for this problem?
currently, you have $60 and your sister has $135. you decide to save $5 of your allowance each week, while your sister decided to spend her whole allowance plus $10 each week. how long will it be before you have as much money as your sister?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
w = weeks from now
5w+%2B+60 is the amount of money I'll have in w weeks
135+-+10w is the amount of money my sister will have in w weeks
These amounts will be equal when 5w+%2B+60+=+135+-+10w
15w+=+75
w+=+5
So, in 5 weeks we'll have the same amount
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check answer
5w+%2B+60+=+135+-+10w
5%2A5+%2B+60+=+135+-+10%2A5
25+%2B+60+=+135+-+50
85+=+85
OK