In a class test containing 10 questions , 5 marks are awarded for every correct answer and 2
marks are deducted for every incorrect answer and 0 marks for question not attempted .
a. Ram gets 3 correct and 7 incorrect answers . What is his score ?
b. Renu attempted 7 questions and gets only 2 correct answers . What is her score ?
Answers
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
Step-by-step explanation:
ram gets 29marks
Renu gets 10