In a test +3 marks are given for every correct answer and -1 mark for every incorrect answer. Sona attempted all the questions a

Question

3 years ago

5

nd scored +20 marks through she got 10 correct answers. How many questions were asked?

1 answer:

8_murik_8 [283] · Answer 1 · 2022-03-08T08:10:23+03:00

Answer: 20

Step-by-step explanation:

(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.

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

10+10= 20