In a class test containing 10 questions, 5 marks are awarded for every correct answer and (-2) marks are awarded for every incorrect answer and 0 for questions not attempted.
(i) Mohan gets four correct and six incorrect answers. What is his score?
(ii) Reshma gets five correct answers and five incorrect answers, what is her score?
(iii) Heena gets two correct and five incorrect answers out of seven questions she attempts. What is her score?
(i) It is given in the question that,
Marks given to students for 1 correct answer = 5
Therefore,
Marks given to students for 4 correct answers = 5 × 4
= 20
Also,
Marks given to students for 1 wrong answer = - 2
Therefore,
Marks given to students for 6 wrong answers = - 2 × 6
= - 12
Hence,
Marks obtained by Mohan = 20 – 12
= 8
(ii) It is given in the question that,
Marks given to students for 1 correct answer = 5
Therefore,
Marks given to students for 5 correct answers = 5 × 5
= 25
Also,
Marks given to students for 1 wrong answer = - 2
Therefore,
Marks given to students for 5 wrong answers = - 2 × 5
= - 10
Hence,
Marks obtained by Reshma = 25 – 10
= 15
(iii) It is given in the question that,
Marks given to students for 1 correct answer = 5
Therefore,
Marks given to students for 2 correct answers = 5 × 2
= 10
Also,
Marks given to students for 1 wrong answer = - 2
Therefore,
Marks given to students for 5 wrong answers = - 2 × 5
= - 10
Hence,
Marks obtained by Heena = 10 – 10
= 0