Question 619072
Judy bought a coat at a 20% discount sale for $72. What was the original price of the coat?

   Imagine  yourself  buying  a  coat.

    The  items  mentioned  are   20% discount sale  ,  original price .

   Since  we  don't use  o  for  a  variable  (looks  like 0)
    let's  use  r  for  regular  price(or  original  Price)

    When  something  is  on  sale  we  subtract  something  from he  regular  price  to  get  the  sale  price.


          Fill  in  the  blank:   regular   price  -   ______  =    sale  price.
       Regular  price  -  actual  discount  amt.  =  sale  price
                r  -    d  =  s
    We  need  to  find  regular  price.   That  means  we  are  either  given  the  sale  price  and  the  discount amt.  or  we have  the info  to  find  them.


        There  are  2  numbers  in the  problem.
       What  does  $72  represent.  We  are  told   sale  price  =  $72.
       Now how do we use  20%  to  find  discount  amt.

         Discount  amt  is   the  small  amt  taken  away  from the  reg  price  to  get  sale  price.   d  =  20%  of  r  so  d   =  .20r

  
 
   reg. price  -  discount  =  sale  price
             r  -   d      =   s

         r    -  .20r   =  72
        1r   -  .20r  =  72
             .80r  =  72

           I  see  multiplication  ,  so  I  divide

               r   =  72/.80   =    $90

      Ask  yourself  if  this  answer  is  reasonable.

       Is  a  20%  discount large  or  small.  I'd  say  small.

        If  reg  price  is  $90   and  sale  price  is $72   is  this  a small  decrease  or  a  large  one.   I'd  say  small.