There are 20 questions in a mathematics quiz. For each correct answer 5 marks will be given and 2 marks will be deducted for a wrong answer. How many questions does Andy answer incorrectly if he scores 72 marks for that mathematics quiz?
Answers
Answered by
1
Answer:
14 questions wrong answer each incorrect answer contain 2 marks so it 28 marks minus finally he got 72 marks in quiz
Answered by
1
Answer:
14 question
Step-by-step explanation:
72 marks for correct that means 28 marks for incorrect
2 marks duducted for 1 questions
1 marks = 1/2
28 marks = 1/2 ×28 = 14 question
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