in test containing 50 Question 2 marks are given for every correct answers -1 Mark is given for every incorrect answer modi attempts all questions but only 40 of his answer are correct what is his total score? one of his friends get only 20 answer correct what is his total score?
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Answer:
Modi:
40×2=80marks for correct answers
10×(-1)=-10marks for wrong answers
So Modi got a total of 70 marks
His friend
20×2=40 marks for correct answers
30×(-1)= -30 marks for wrong answers
So he got a total of 10 marks
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NO. OF QUESTION = 50
2 MARKS FOR CORRECT ANSWER
-1 MARK FOR INCORRECT ANSWER
ANSWERS ALL QUESTIONS IN WHICH 40 ARE CORRECT
MARKS FOR CORRECT ANSWER = 40 × 2
= 80
MARKS FOR INCORRECT ANSWER
= -1 × 10
TOTAL SCORE = 70
HIS FRIENDS SCORE
MARKS FOR CORRECT = 20 × 2 = 40
MARKS FOR INCORRECT = -1 ×30
TOTAL SCORE = 40 - 30
= 10
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