19. In an Examination, (+2) marks are given for every correct answer and (-0.5) marks is given
for every wrong answer and 0 for non-attempting any question.
(a) Latika scores 30 marks. If she got 20 correct answers, how many questions she
attempted incorrectly?
(b) Sara scores -4 marks if she got 3 correct answers, how many were incorrect?
Answers
Answered by
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Step-by-step explanation:
30 x 2 = 60
60 - the sum of two numbers
60 - 50 = 10 answers are in correct
b 3 x 2 = 6
18 questions were incorrect
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