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zmey [24]
3 years ago
6

BillieÍs monthly cell phone bill includes the cost of cell phone service, 15% tax on the cost of the cell phone service, and a $

9.25 data fee. BillieÍs monthly cell phone bill totals $61.
What is the cost of the cell phone service before tax is added?
Mathematics
1 answer:
dem82 [27]3 years ago
6 0
X - <span>the cost of cell phone service before tax is added

</span>x+15\%x+9.25=61&#10;\\x+ 0.15x=61-9.25&#10;\\1.15x=51.75&#10;\\x= \frac{51.75}{1.15}&#10;\\x= 45<span>
</span>
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