IXL | Percent of change: word problems

During summer vacation, Billy read, on average, 8 pages per night. Once he returned to school, he averaged 12 pages per night. What is the percent of increase in Billy's reading?

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question

Several years ago, the average serving size of beef at restaurants was 5 ounces. Due to changing restaurant trends, the average serving size is now 6 ounces. What is the percent of increase in the average serving size?

key idea

percent of change

amount of change

original amount

solution

Plug 5 ounces and 6 ounces into the formula for percent of change and simplify.

percent of change

amount of change

original amount

–

0.2

Write the number as a percent.

0.2

20%

The percent of increase in the average serving size of beef is 20%.

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