Pearson Algebra 1 Common Core, 2011
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Pearson Algebra 1 Common Core, 2011 View details
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Exercise 12 Page 157

Is the value of the new amount greater or less than the value of the original amount?

Decrease; 10 %.

Practice makes perfect

To determine the percent change p, we can use the following general formula. p % =Amount of increase or decrease/Original amountFrom the given values, we can see the original amount was 150 lb and the new amount is 135 lb. This is a decrease in the amount. 150 - 135= 15 The difference between the new amount and the original amount is 15 lb. Now, we can use the formula.

Percent change=Amount of decrease/Original amount
Percent change=15/150
Percent change=1/10
Percent change=0.1
Percent change = 10 %

The percent decrease is 10 %.