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. (i) Bharathi attempts all questions but
only 9 answers are correct. What is her total score? (ii) One of her friends Hema attempts
only 5 questions and all are correct. What will be her total score?​

Answer 1

Answer:

$bharathi \: right \: answer \: = 9 \\ marks \: for \: right \: = 9 \times 4 = 36 \\ marks \: for \: wrong \: question \: = 6 \times - 2 = - 12 \\ total \: of \: bharati \: = 36 - 12 = 24$

$hema \: right \: answers \: 5 \\ marks \: = 5 \times 4 = 20$

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