Concept explainers
The percentage increase in U.S. cell phone antennas in that one-year period.
Given:
From December 2006 to December 2007, the number of cell phone antennas in the United States grew from 195,613 to 213,299.
Concept Used:
To calculate the percentage increase:
First: work out the difference (increase) between the two numbers you are comparing.
Then: divide the increase by the original number and multiply the answer by 100.
% increase = (Increase ÷ Original Number) × 100.
Calculation:
The number of cell phone antennas in the United States grew from 2006 to 2007 is = 195,613 to 213,299.
Total no. of cell phone antennas increase in the United States
Percentage increase in U.S. cell phone antennas in that one-year period is −
So the percentage increase in U.S. cell phone antennas in that one-year period
Chapter 1 Solutions
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