In a class test containing 15 questions, 4 marks are given for every correct answer and -2 marks are given for every incorrect answer.(a) Teena attempts all questions, but only 10 of her answers are incorrect. What is her total score?(b) One of her friends scores -4 marks in the test though she has got 8 correct answers. How many questions has she attempted incorrectly?

Harshit Singh , 3 Years ago

Grade 12th pass