Question

1. In a class test containing 20 questions, 5 marks are awarded for every correct answer
and (-2) marks awarded for every incorrect answer and 0 for each question not
attempted.
Mudit gets 8 correct and 12 incorrect answers. What is his score?
ii. David attempts all questions but only 12 of his answers are correct. What is
his score?
iii. Ravi gets 10 answers correct. What will be his score, if he did not attempt 6 questions at all?​

Answer 1

Answer:

n a class test containing 10 questions, 5 marks are awarded for every correct answer and (−2) for each wrong and 0 for not attempted questions. We will just forget unattempted questions as it will give her 0 marks

So let us say for any student who gave x right questions and y wrong questions then total marks is given as 5x+(−2)y i.e

5x−2y total marks.

1) Mohan gets 4 correct and 6 incorrect so total score 5×4−2×6 i.e 8marks

2)Reshma gets 5 correct anf 5 incorrect do total marks scored is equal to

5×5−2×5 i.e 15marks

3)Heena gets 2 correct and 5 incorrect. She attempts only 7 questions so for the remaining 3 questions she will score zero marks.

So total marks scored by Heena is 5×2−5×2+0 i.e 0marks

Step-by-step explanation:

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