SOLUTION: Debra took a test that consisted of 150 questions and she got 78% correct. How many questions did Debra miss on the test?

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: Debra took a test that consisted of 150 questions and she got 78% correct. How many questions did Debra miss on the test?      Log On


   

Question 192900: Debra took a test that consisted of 150 questions and she got 78% correct. How many questions did Debra miss on the test?
Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!


First, we get how many correct she got:
0.78%28150%29=117, number of correct questions.

Then, 150-117=red%2833%29, number of mistakes (Answer)

Simply to check,

If 78% are correct, so the remaining 22% (100-78=22%) are incorrect:
0.22%28150%29=33, good

Thank you,
Jojo