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CH 13]                            Calculating Business                                 13-5




              Solution algorithm 2:   compliments expressed as decimal
                                 $12,000.00 list price
                                    x   0.85 (= 100% — 15%)     15% discount compliment is (1 —.15 =) .85
                                 $10,200.00  balance
                                    x   0.90  (= 100% — 10%)     10% discount compliment is (1 —.10 =) .90
                                  $9,180.00  balance
                                     x  0.90 (= 100% — 10%)     10% discount compliment is (1 —.10 =) .90
                                  $8,262.00  net price

              With your hand held calculator and using the    %    key:

              Solution:

               Cl/C  12000    X    85   %     X    90   %     X    90   %  —> 8262,     means $8,262

                   Without   %   key   (You must know the decimal value):

                Cl/C  12000    X   .85    X   .90     X   .90    =      8262,   means $8,262



               Example B:     Calculate the net price of merchandise listed at $800 less a volume discount
                              of 15%, duty discount of 10%, cash discount of 5% where each discount
                              percent is a multiple of the previous discounted value. This is also known as
                              a series of discounts dependent on how they are applied by the wholesaler.
                                                                                                                13
               Solution algorithm:

                             List price x ∫D1-n = net price                                      ∫:  An integral. A
                                                                                                 function of an integral
               $800 list price (or invoice price)   x     (  ∫ 15%, 10%, 5%)        =            or denoted by an
                                                                                                 integer, especially as
               $800 list price (discounts as decimals)  x (1.00 − 0.15) x  (1.00 − 0.10) x (1.00 - 0.05)   =
                                                                                                 coefficients of a
                 Using discount compliment decimals   $800   x  (0.85)  x  (0.9)  x (0.95)   =   function.
                                                   $800   x       0.72675           =   $581.40

                                                         Net Price Equivalent Rate (NPER)

               With your hand held calculator and using the    %    key:


              Cl/C   800     X    85   %     X    90   %     X    95   %  —> 581.40,     means $581.40


                  Without   %   key   (You must know the decimal value):

              Cl/C   800     X   .85    X    .90    X    .95   =    581.40,   means $581.40


               $800   x      (0.85)  x     (0.9)   x      (0.95)  =


                  Single Equivalent Discount Rates. Presume there are several different items each having
               different list prices yet enjoy the same series of discount rates. It is possible to calculate a single
               discount value that can be applied to all items even though their list prices are different; this is the
               basis of the equivalent discount rate. This single equivalent discount rate can be applied to each
               different item with a different list price. Note the algorithm below and the equivalent rate of
               0.72675.



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