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By decreasing each dimension by 1 unit​, the area of a rectangle decreased from 20 square feet​ (on the​ left) to 12 square feet​ (on the​ right). Find the percent decrease in area.

Respuesta :

sqdancefan

Answer:

  40% decrease

Step-by-step explanation:

The decrease in area is 20-12 = 8 square feet. As a percentage of the original area, that is ...

  8/20 = 40/100 = 40% . . . . decrease in area

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