Question

6. ItcostJustin$100tohavecableTVinstalledinhishouse.Eachmonthhepaysanaccessfeeplus a tax of 7% of his monthly bill. After 6 months, Justin had paid a total of $350.38 for his access fee, taxes, and his initial installation. What is Justin’s monthly access fee not including taxes?

Answer 1

The known is

       $100 install

       6 months

       $350.38 total

       7% of bill in taxes

Unknown

         monthly access fee = f

100 + 6( f + 0.07f ) = 350.38

100 + 6f + 0.42f = 350.38

100 + 6.42f = 350.38

- 100                - 100

-----------------------------

6.42f = 250

-------     ------

6.42       6.42

f = $39 monthly cable fee