Question

Please answer this question I will mark as brainly

Answer 1

Answer:

i)sona got 10 answers correct.

   1 correct answer = 3 marks

   10 correct answers = 10×3 = 30 marks

but she got only 20

    1 wrong answer = -1 mark

  that means she attempted 10 incorrect answers.

(ii) from (i) she made 10 incorrect answers

    from the question 10 correct answers.

no.of questions in the test= no.of incorrect+ no.of correct answers

                                        = 10+10= 20