in a class list containing 15 questions 4 marks are given in every correct answer and (-2) markers are given for every incorrect answer 1) Bharathi attempts all questions only. 9 answer are Correct . what is here total score ii ) one of her friends hema attempts only 5 questions and all the correct. what will be her total score ?
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Answered by
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Step-by-step explanation:
Given that,
In a class test containing 15 questions, 4 marks are given for every correct answer and (-2) marks are given for every incorrect answer.
Let the number of correct answer = x Number of incorrect answers = y Marks obtained by the student = 4(x) - 2y
Case(1) Bharathi attempts all questions. Number of correct answers = 9 Number of incorrect = 15 - 9 = 6
So, x = 9, y = 6
Total score = 4x - 2y = 4(9) - 2 (6) = 36 - 12 =
24
Case(2) Hema attempts only 5 questions. All are correct.
Incorrect Answers = 0
x = 5, y = 0
Total score = 4x - 2y = 4(5) - 2 (0) = 4(5)= 20.
Therefore, Bharathi score is 24, Hema score is 20.
Answered by
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Step-by-step explanation:
Bharathi gets marks 24
hema gets marks 20
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