Question

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Billie’s 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. Billie’s monthly cell phone bill totals $61.

What is the cost of the cell phone service before tax is added?

Answer 1

42.6

Answer 2

Name your variable

n= cost of service
your equation would be
n + 0.15n + 9.25 =61
1.15n = 61-9.25
1.15n = 51.75
divide both side by 1.15
n = 45

Cost service is 45$