Question

4) In a class test (+3) marks are given for everycorrect answer and (-2) marks are given for<br />every incorrect answer and no marks for not attempting any question (1) Radhika scored 20 mark If she has got 12 correct answers, how many has she attempted incorrectly (1) Mohini scores(-5) marks in this test though she has got 7 correct answers How many question has she attempted incorrectly ​

Answer 1

Answer:

1) Radhika scored 12×3=36 marks. as 3 marks are for correct answer

final score of radhika is 20.

she got 16 marks negative. as −2 marks are for incorrect answer

therefore she made 16/2 = 8 incorrect answer.

2) Mohini scored 7×3=21 marks.

As 3 marks are for correct answer

final score of radhika is −5.

she got 26 marks negative. as −2 marks are for incorrect answer

therefore she made 26/2 = 13 incorrect answer.

Hope it helps you.....

Answer 2

i)(20-12)

=8/2 = 4

ii)21+5 /

=26/2

=13

or

1) radhika scored 36 marks.

final score of radhika is 20.

she got 16 marks negative.

therefore she made 8 incorrect answer.

2) mohini scored 21 marks.

final score of radhika is -5.

she got 26 marks negative.

therefore she made 13 incorrect answer

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