in a test, (+4) marks are given for every correct answer and (-1) mark is given for every incorrect
answer and 0 for unattempted questions:
(a) Rajat answered all the 100 questions and scored 200 marks. If he attemped 60 questions correctly, then find
the number of incorrect questions attempted by him.
(b) John attempted 80 questions out of 100 questions. If he got (-20) marks for incorrect answers, then find
how many questions he attempted correctly and incorrectly? Also, find his score.
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Answer:
(a)the number of incorrect questions attempted by rajat is 40
(b)john attempted 60 questions correctly.
his score is 220
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