In a class test (+ 5) marks are given for every correct answer and (–3) marks are given for every incorrect answer and no marks for not attempting any question. Rahul scored 32marks. If he has got 10correct answers, how many questions has he attempted incorrectly?
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1) Radhika scored 12×3=36 marks. as 3 marks are for correct answer
final score of radhika is 20.
she got 16 marks negative. as −2 marks are for incorrect answer
therefore she made
2
16
=8 incorrect answer.
2) Mohini scored 7×3=21 marks. as 3 marks are for correct answer
final score of radhika is −5.
she got 26 marks negative. as −2 marks are for incorrect answer
therefore she made
2
26
=13 incorrect
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