Question

In a class test , 3 marks are given for correct answer and -2 for every incorrect answer and no marks for not not attempting any question .
Radhika scored 20 marks . If she has got 12 correct answer , how many questions has she attempted incorrectly.​

Answer 1

Answer:

Step-by-step explanation:

20 marks include both right and wrong answers.

12 correct answers will yield 12*3 = 36 marks

36-20 = 16 marks

16 marks are the total wrong answer score

16/2 (wrong answers 2 marks deducted)

8 questions incorrect.

Answer 2

Answer:

marks for correct ans = 3

marks for incorrect ans = -2

radika scored = 20

marks for correct ans = 12 * 3

marks for incorrect = 20 - 36 = - 16

no. of incorrect ans = 16/2 = 8

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