in a class test containing 16 questions for maths given 4 marks are given for every correct answer and -2 are given for every incorrect answer.
(1) Sandeep attempted all the questions but only 9 of his answers are correct. what his total score?
(2)one of his friend gets only 5 answer is correct what will be his score
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(1) Sandeep will get 22 marks
(2) His friend will get -2 marks.
Explanantion:
For correct answer: 4 marks
For incorrect answer: -2 marks
1. Sandeep attempted all questions.
But 9 are correct
So, 16-9 =7 are incorrect.
Total marks he will get: 9 x 4 (for correct answers) + 7 x (-2) (for incorrect answer
= 36 - 14 = 22 marks
2. His friend get 5 correctr answers, so 11 incorrect answers.
Total marks his friend will get: 5 x 4 (for correct answers) + 11 x (-2) (for incorrect answer
= 20 -22 = -2 marks
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