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?
Answers
Answered by
0
Answer:
i she gave 10 incorrect answer
30 questions were given in the test
Answered by
0
Answer:
incorrect answer =10
total question =20
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