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09-10-2019
Mathematics

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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.

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sqdancefan sqdancefan

16-10-2019

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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