Question

In a class test 4 marks were awarded for every correct answer, 2 marks are deducted for every incorrect answer and no marks are given for not attempting question. Ravi scored 20 marks. If he has got 8 correct answers, how many questions has he attempted incorrectly?​

Answer 1

Answer:

⇒  Ravi scored = 20 marks

Correct answer by Ravi= 8

Let incorrect answers by Ravi be x

According to question, \

                      8(4)+x(−2)=20

⇒                     −2x = 26−32

⇒                          x = 3

∴ So Ravi attempted 3 incorrect answers.