20. (i) In a class test containing 20 questions, 4 marks are given for every correct answer and (-2) marks are given for every incorrect answer. Anita attempts all questions and 12 of her answers are correct. What is her total score? (ii) If a= -8, b= -7, c= 6, verify that (a+ b) + c = a + (b+ c)
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0
Answer:
(i) ans. Anita's total score is 32
Answered by
1
Answer:
Anita had received 32 marks.
Step-by-step explanation:
Correct answer = 4 marks
Wrong answer = -2
12 answers correct = 12 × 4 = 48 marks
8 incorrect = 48 - ( 8 × 2 )
= 32 marks out of 80 marks.
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