jiaern0405
jiaern0405 jiaern0405
  • 24-07-2021
  • Mathematics
contestada

In an IQ test, 4 marks are given for every correct answer and 2 marks are deducted for every wrong answer. If Crystal answered 30 questions and scored 84 marks, how many of her answer were correct?​

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Mahkai2Fye
Mahkai2Fye Mahkai2Fye
  • 24-07-2021
It’s 18 because
4x30=120
120-84=36
36/2=18
So the correct answer is 18.
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