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

Answer 1

How many computers were added?

Answer 2

To find a percent of change, you need to know 2 things: how much something changed and what was the original amount from which it changed. The difference in the original amount and the new amount is divided by the original amount. To find how much it changed, subtract the original amount (18) from the new amount (25). When you find that difference, divide it by the original amount.

Answer 3

-38.9?

Answer 4

The percentage is positive though

Answer 5

So you should have 38.9%

Answer 6

This is because you have an increase from 18 to 25.

Answer 7

i got it now thank you!:)

Answer 8

If you had a decrease, then the percent change would be negative.

Answer 9

Yes! Good job! There was a 38.9% increase in the number of computers!