Question

Imer
2.
Marks: 4
Question:
In a class test (+3) marks are given for every correct answer
and (-2) marks are given for every incorrect answer and no
marks for not attempting any question.
(i) Raju scored 20 marks. If he has got 12 correct answers, how
many questions has he attempted incorrectly?
(ii) Rani scores -5 marks in this test, though she has got 7
correct answers. How many questions has she attempted
incorrectly?​

Answer 1

Answer:

Marks for every correct answer =

Marks for every wrong answer =

(i) According to question,

Marks obtained by Radhika =

Number of correct answers =

Marks obtained for correct answers =

Marks obtained for incorrect answers = Total marks – Marks obtained for correct answers

Number of incorrect answers =

Therefore, Radhika attempted 8 questions incorrectly.

(ii)

According to question,

Marks obtained by Mohini =

Number of correct answers =

Marks obtained for correct answers =

Marks obtained for incorrect answers = Total marks – Marks obtained for correct answers

Number of incorrect answers =

Therefore, Mohini attempted 13 questions incorrectly.