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 –

A. Naina scored 20 marks if she has got 12 correct answers. How many

questions had she attempted incorrectly?

B. Mohini scored -5 marks in the test though she had got 7 correct answers. How

many questions had she attempted incorrectly?
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Answer 1

Answer:

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A: 8 incorrect

B: 13 incorrect

Step-by-step explanation:

For question A: 12 correct answers means 12*3 or 36 marks

But it says Naina scored 20 marks

Then 36-20=16

So 16/2=8 incorrect questions

For question B: 7 correct answers is 7*3=21 marks

Mohini scored -5 marks

so 21-(-5)=21+5=26

26/2=13 incorrect questions

Answer 2

Answer:

A. Incorrect no of answers: 8

Step-by-step explanation:

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