main algebraic solution

Mathematics
Tutor: None Selected Time limit: 1 Day

May 30th, 2015

550pairs@$99 each

20extra pairs@$99-$1 each

Average?

total cost 550 pairs=(550by99)

                              =54450

total cost 20pairs=(20by98)

                            =1960

average               =(1960+54450)/(550+20)

                             =98.964

   Approximately   =$98.96

May 30th, 2015

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May 30th, 2015
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May 30th, 2015
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