notme1285
notme1285 notme1285
  • 17-03-2020
  • Mathematics
contestada

Deanna gets 3 problems incorrect on a math quiz. Her score is 85%. How many questions are on the quiz?

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itzshiane
itzshiane itzshiane
  • 17-03-2020

Answer:

20 questions.

Step-by-step explanation:

Let  x  be the number of questions on the quiz.

85 %  means  85  out of  100  (or  85/ 100  )

85/ 100   = 3/x

--->100-85=15

--->15/3=5

--->100/5=20  

Meaning each question was worth 5% and there were 20 questions.

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