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Lauren wolf purchased address at a 30% off sale. She paid $133 for the dress. Let p represent the original price of the dress.

Respuesta :

altavistard
p = original price
                                               $133
0.70p = $133.  Find p:     p = --------- = $190
                                               0.70

Here I've used 0.70 because 1.00-0.30 = 0.70.  "30% off" is equivalent to "100% - 70%".
p=$133.00×.30+$133.00
39.90+$133.00
p=$172.90

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