Question

As part of an ongoing service project, the students at Arlington High School recently spent an afternoon planting trees. They planted an average of 4 trees per participant. Soon they plan to do some more planting, averaging 2 trees per participant. If everything goes as planned, what will be the percent of decrease in the average number of trees planted?

Answer 1

50%

Explanation:

percent change = (new number - old number)/(old number) × 100%

Here, the new number is 2.

The old number is 4.

percent change = (2 - 4)/(4) × 100%

percent change = -2/4 × 100%

percent change = -50%

Since the percent change is negative, it's a percent decrease.

The percent decrease is 50%.