competitive exam 5 marks are given for every correct answer and "-2" marks are given for every correct answer and no marks for not attempting any question to Neha got 9 correct answers she scored "-7" marks in the exam find the number of questions attempted by her incorrectly
Answers
Answered by
0
Step-by-step explanation:
Marks given for one correct answer = 5
So, marks given for 10 correct answers
= 5 X 10 = 50
Radhika's score = 30
Marks obtained for incorrect answer
= 30- 50 = -20
Marks given for one incorrect answer
= (-2)
Therefore, number of incorrect answers
= (−20)÷(−2)=10
Answered by
0
Answer:
21 questions were attempted by her incorrectly
Step-by-step explanation:
Marks given for every correct answer = 5
Marks given for every wrong answer = -2
Nehas marks = -7
No. of questions correctly answered by neha = 7
Marks earned by correct answers = 7 * 5 = 35
No. of wrong answers = (35 + 7)/2 = 21
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