In a test (+5) marks are given to every correct answer and (-2) marks given to every wrong
answer. Sonam answered all the questions and scored 100 marks. 30 of Sonam's answers were
correct. How many of the questions she attempted were incorrect? Also find the total number
of questions.
Answer both with explanation and working for brainliest, 5 stars and thanks. If you don't give a proper answer you get nothing.
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Answer:
incorrect answers=25
total no. of questions = 55
Step-by-step explanation:
her correct answers = 30
marks obtained on that = 30×5=150 marks
but she obtained = 100 marks
so, marks subtracted on wrong answers = 150-100=50 marks
Mark obtained on each wrong answer = -2
so, no. of questions she attempted wrong = 50/2 = 25
total no. of questions = 30+25= 55
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