Question

In a class test [+3] marks are given for every correct answer and [-2] marks are given for every incorrect answer and no marks for not attempting any question.
[1] Radhika score 20 marks.If she has got 12 correct answer , how many question has she attempted incorrectly?
[2]mohini scores [-5] marks in this test ,though she has got 7 correct answers.
How many questions has she attempted incorrectly?

Answer 1

Answer:

1=48

2=30

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Answer 2

Answer:

1.Solution:-

Radhika got marks for correct answers= 12 x 3 = 36 Marks

Actual score = 20 marks

Marks lost for incorrect answers = 36 - 20 = 16

Number of incorrect answers = 16/2 = 8

∴ Number of incorrect answers by Radhika is 8 Answers.

2.Solution:-

Mohini got marks for correct answers = 7 x 3 = 21 Marks

Actual score = -5 Marks

Marks lost for incorrect answers = 21 - ( -5 ) = 21 + 5 = 26

Number o incorrect answers = 26/2 = 13

∴ Number of incorrect answers by Mohini is 13 Answers.

Hope that this Answer will help you.