Question

When the new computer lab opened, there were 18 computers. By the end of first week, there were 25 computers. Find the percent of change in the number of computers? Round your answer to the nearest tenth, if necessary. a. –38.9% c. 38.9% b. 72% d. 33.3%

Answer 1

Answer: =39%

Explanation:

25 − 18 /18 × 100 = 7 /18 × 100

=39%

Answer 2

38.9% Option c.

Explanation:

When the new computer lab opened, there were 18 computers.

By the end of first week, there were 25 computers.

The increase in numbers of computers = 25 - 18 = 7 computers

The percent of change =
`(7)/(18)* 100`

=
`(700)/(18)`

= 38.888 ≈ 38.9%

The percent of change would be 38.9% in the number of computers.