A math book sells for $106.50. (a) find the amount of sales tax, to the nearest cent, if the sales tax rate is 8.5%. (b) find the total purchase price

Answers:
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 a)  " $ 9.05 " .
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 b)  " $ 115 .55 " . 
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Explanation:
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a)   "FInd the amount of sales tax, to the nearest cent, 
   if the sales tax rate is 8.5% ."

        →  8.5% of 106.50 =  (8.5/100) * 106.50 = 0.085 * 106.50 ;
 
                          =  9.0525 ; 
 
       → round to the nearest cent:  $ 9.05 . 
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b)  Find the purchase price:

       → $  106.50 
         +         9.05
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            $  1 1 5.55
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