In an Examination, (+2) marks are given for every correct answer, and (-0.5) marks are given for every wrong answer, and 0 for non-attempting any question. (a) Latika scores 30 marks. If she got 20 correct answers, how many questions she attempted incorrectly?
Answer (1)
7th Aug, 2022
Dear ABC
As per as given data which is
+2 marks for correct answer
-0.5 marks for incorrect answer
Calculation is given below
Total marks latika scored = 30 marks.
She got 20 questions correct means 20× 2 ( for each correct answer) = 40 marks.
Now she has got only total of 30 marks means 40-30 = 10 marks she have done negative marking.
Now total negative marking scored is 10 marks and for each -0.5 marks means 10/0.5 = 20 which means she attempted 20 questions as incorrect answer.
So your answer is 20 incorrect answer.
She have done 20 correct answer and 20 incorrect answer to score total of 30 marks according to your marking scheme.
Hope this helps you
Good luck
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