In a test, +3 marks are given for every correct answer and –1 mark are given for every incorrect answer. Sona attempted all the questions and scored +20 marks though she got 10 correct answers.(i) How many incorrect answers has she attempted?(ii) How many questions were given in the test?
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Answered by
33
10 correct answer=10×3=30 total mark
she got 20 mark
that means she attempted 10 wrong answer
10 incorrect answer attempted.
20 question were given in the test.
she got 20 mark
that means she attempted 10 wrong answer
10 incorrect answer attempted.
20 question were given in the test.
Answered by
9
Answer:
Step-by-step explanation:
10 correct answer=10×3=30 total mark
she got 20 mark
that means she attempted 10 wrong answer
10 incorrect answer attempted.
20 question were given in the test.
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