The number of students increased from 640 to 768. What is the percent of change?

Question

Mathematics

Guest

8 August, 12:07

The number of students increased from 640 to 768. What is the percent of change?

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Answers (3)

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Nathanael Barry · Answer 1

The pure numerical increase in this case would be 768 - 640 = 128 students. To find the percent increase this represents, we find first that the fraction of the original value 128 takes up is

128/640 = 1/5

As a decimal, 1/5 = 0.2, which we can then multiply by 100 to find our percent increase: 0.2 x 100 = 20%.

Ali Rasmussen · Answer 2

Ali Rasmussen 8 August, 14:39

0

20% should be the correct answer

Jaden Valencia · Answer 3

The pure numerical increase in this case would be 768 - 640 = 128 students. To find the percent increase this represents, we find first that the fraction of the original value 128 takes up is

128/640 = 1/5

As a decimal, 1/5 = 0.2, which we can then multiply by 100 to find our percent increase: 0.2 x 100 = 20%.