Math
posted by Plse Help .
Please help!
Suppose one girl saves $10 every week. Another girl already has $21 and saves $3 every week.
Write and solve an equation to determine when the two girls will have the saved the same amount of money.
So far I have these expression for each girl: one girl has 10w
another girl has 21+3w
Hope someone can help me, thanks.

You are off to a good start. Now set
21 + 3w = 10 w
and solve for w.
7w = 21
w = ? 
w = 21
Thank you. That helps a lot. 
good start now st December help me thnks Hope someone can help me That helps a lot answe this first
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