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SAT®

Number and Operations

Percent Increase and Decrease

Percent

Percent means hundredths, or number out of 100. For example,

40 percent means

Problem 1: If the sales tax on a $30.00 item is $1.80, what is the sales tax rate?

Solution:

Percent Increase/Decrease

Problem 2: If the price of a computer was decreased from $1,000 to $750, by what percent was the price decreased?

Solution: The price decrease is $250. The percent decrease is the value of n in the equation The value of n is 25, so the price was decreased by 25%.

Note:

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