Question

In a test containing 10 questions, 2 marks are awarded for every correct answer and (–1) marks are awarded for every incorrect answer and 0 for questions not attempted. Raj gets seven correct and three incorrect answers. What is his score?​

Answer 1

Answer:

In 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

Answer 2

Answer:

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7×2-3×-1=11 marks

∴ he got 11 marks