Question

In a class test containing 15 questions, 4 marks are given for every correct answer and (-2) marks are given for every incorrect answer. 
Gurpreet attempts all questions but only 9 of her answers are correct.What is her total score?​

Answer 1

Answer:

9 answers = 9*4 =36

6 answers are incorrect = 6* (-2) =-12

Total score = 36 - 12

=24

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Answer 2

Answer:

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) Gurpreet 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

Step-by-step explanation:

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