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1. A magazine advertise its $12 annual subscription price 70% off the newsstand price. What is the number of dollars per year a reader would spend if the magazine were purchased at the newsstand price?

2. Kelsey was delivering lunch to a local office building. Kelsey's first delivery was to the middle floor of the building. She then took the elevator up 4 floors for the next delivery, down 6 floors for her third delivery, and up 7 floors for her final delivery. She was then on top floor of the building. How many floors were in this office building?

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Respuesta :

ANCKPOP
1.  $17.14

  12   represents    70%
   x    represents    100%

rule of three

Price                 Percentage 
+12                         70-
  -x                          100+

[tex]x= \frac{12*100}{70} \\ \\ x= \frac{12*10}{7} \\ \\ x=17.14[/tex]




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