Ateacher expected 18 parents to show up for open house, but 25 attended. which represents the percent of error? show work!

(a) 20%

(b) 24%

(c) 25%

(d) 28%

The answer is D. 28

I forgot how to get the answer using a formula. But i just multiplied .28 by 25 and got 7 so i just subtracted 7 from 25 and got 18

You can also divide 18 by 25 and get the percentage of parents that did show up compared to the ones that didn’t so you just subtract 1 by your answer

Hope this helps