By decreasing each dimension by 1 unit, the area of a rect- angle decreased from 40 square feet (on the left) to 28 square feet (on the right). Find the percent of decrease in area. 8 ft 7 ft Area: Area: 5 ft 4 ft 40 sq ft 28 sq ft

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter2: Solving Equations
Section2.1: Properties And Operations
Problem 35E
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By decreasing each dimension by 1 unit, the area of a rect-
angle decreased from 40 square feet (on the left) to 28 square
feet (on the right). Find the percent of decrease in area.
8 ft
7 ft
Area:
Area:
5 ft
4 ft
40 sq ft
28 sq ft
Transcribed Image Text:By decreasing each dimension by 1 unit, the area of a rect- angle decreased from 40 square feet (on the left) to 28 square feet (on the right). Find the percent of decrease in area. 8 ft 7 ft Area: Area: 5 ft 4 ft 40 sq ft 28 sq ft
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