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 each question not attempted . Heena gets 2 correct and 5 incorrect answers. What is her score?
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Solution
Transcript
Solution 7)
(i) Mohan get 4 correct answer = 4\times5\ =20\
He gets 6 incorrect answer = 6\times\left(-2\ \right)=\ -12
Total score = 20-12\ =\ 8\
Thus, mohan get 8 marks in the class test.
(ii) For 5 correct answer = 5\times5\ =\ 25
For 5 incorrect answer = 5\times\left(-2\right)=\ -10
Total score = 25-10\ =\ 15
(iii) Heena get 2 correct answer = 5\times2=\ 10
Heena get 5 incorrect = 5\times\left(-2\right)\ =\ -10
Total score = 10\ -10\ =\ 0
Thus, total score of heena is zero.
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Step-by-step explanation:
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Answer:
0 marks
Step-by-step explanation:
1. 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 that is 0 marks
OR
2. Heena get 2 correct answer = 5 x 2= 10
Heena get 5 incorrect = 10-5x2
Total score = 10-10= 0
Thus, total score of heena is zero.