Answer:
11 weeks
Explanation:
The equation would be 20w + 30 = 250
so, we need to solve w.
20w + 30 = 250
- 30 - 30
20w = 220
___ ____
20 20
w = 11
30+20w=250
w=11
To do this, write this equation because 30 is what she had and 20w is the weeks. We don't know the weeks so use w. Finally, put=250
To solve this, do 250-30=220
So 20w=220
Divide 220/20
W=11
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